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title = "Buffering Capacity Explains Signal Variation in Symbiotic Calcium Oscillations"
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title = "Buffering Capacity Explains Signal Variation in Symbiotic Calcium Oscillations"
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date = 2012-12-01
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date = 2012-10-01
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authors = ["Emma Granqvist", "Derin Wysham", "Saul Hazledine", "Wojciech Kozlowski", "Jongho Sun", "Myriam Charpentier", "Teresa Vaz Martins", "Pauline Haleux", "Krasimira Tsaneva-Atanasova", "J. Allan Downie", "Giles E. D. Oldroyd", "Richard J. Morris"]
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authors = ["Emma Granqvist", "Derin Wysham", "Saul Hazledine", "Wojciech Kozlowski", "Jongho Sun", "Myriam Charpentier", "Teresa Vaz Martins", "Pauline Haleux", "Krasimira Tsaneva-Atanasova", "J. Allan Downie", "Giles E. D. Oldroyd", "Richard J. Morris"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "Legumes form symbioses with rhizobial bacteria and arbuscular mycorrhizal fungi that aid plant nutrition. A critical component in the establishment of these symbioses is nuclear-localized calcium (Ca2+) oscillations. Different components on the nuclear envelope have been identified as being required for the generation of the Ca2+ oscillations. Among these an ion channel, Doesn't Make Infections1, is preferentially localized on the inner nuclear envelope and a Ca2+ ATPase is localized on both the inner and outer nuclear envelopes. Doesn't Make Infections1 is conserved across plants and has a weak but broad similarity to bacterial potassium channels. A possible role for this cation channel could be hyperpolarization of the nuclear envelope to counterbalance the charge caused by the influx of Ca2+ into the nucleus. Ca2+ channels and Ca2+ pumps are needed for the release and reuptake of Ca2+ from the internal store, which is hypothesized to be the nuclear envelope lumen and endoplasmic reticulum, but the release mechanism of Ca2+ remains to be identified and characterized. Here, we develop a mathematical model based on these components to describe the observed symbiotic Ca2+ oscillations. This model can recapitulate Ca2+ oscillations, and with the inclusion of Ca2+-binding proteins it offers a simple explanation for several previously unexplained phenomena. These include long periods of frequency variation, changes in spike shape, and the initiation and termination of oscillations. The model also predicts that an increase in buffering capacity in the nucleoplasm would cause a period of rapid oscillations. This phenomenon was observed experimentally by adding more of the inducing signal."
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abstract = "Legumes form symbioses with rhizobial bacteria and arbuscular mycorrhizal fungi that aid plant nutrition. A critical component in the establishment of these symbioses is nuclear-localized calcium (Ca2+) oscillations. Different components on the nuclear envelope have been identified as being required for the generation of the Ca2+ oscillations. Among these an ion channel, Doesn't Make Infections1, is preferentially localized on the inner nuclear envelope and a Ca2+ ATPase is localized on both the inner and outer nuclear envelopes. Doesn't Make Infections1 is conserved across plants and has a weak but broad similarity to bacterial potassium channels. A possible role for this cation channel could be hyperpolarization of the nuclear envelope to counterbalance the charge caused by the influx of Ca2+ into the nucleus. Ca2+ channels and Ca2+ pumps are needed for the release and reuptake of Ca2+ from the internal store, which is hypothesized to be the nuclear envelope lumen and endoplasmic reticulum, but the release mechanism of Ca2+ remains to be identified and characterized. Here, we develop a mathematical model based on these components to describe the observed symbiotic Ca2+ oscillations. This model can recapitulate Ca2+ oscillations, and with the inclusion of Ca2+-binding proteins it offers a simple explanation for several previously unexplained phenomena. These include long periods of frequency variation, changes in spike shape, and the initiation and termination of oscillations. The model also predicts that an increase in buffering capacity in the nucleoplasm would cause a period of rapid oscillations. This phenomenon was observed experimentally by adding more of the inducing signal."
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featured = false
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featured = false
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publication = "*Plant Physiology*"
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publication = "*Plant Physiology, Volume 160, Issue 4, December 2012, Pages 2300–2310*"
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url_pdf = "http://www.plantphysiol.org/content/160/4/2300"
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url_pdf = "http://www.plantphysiol.org/content/160/4/2300"
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doi = "10.1104/pp.112.205682"
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doi = "10.1104/pp.112.205682"
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title = "Multipartite Entangled Spatial Modes of Ultracold Atoms Generated and Controlled by Quantum Measurement"
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title = "Multipartite Entangled Spatial Modes of Ultracold Atoms Generated and Controlled by Quantum Measurement"
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date = 2015-03-01
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date = 2015-03-19
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authors = ["T. J. Elliott", "W. Kozlowski", "S. F. Caballero-Benitez", "I. B. Mekhov"]
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authors = ["T. J. Elliott", "W. Kozlowski", "S. F. Caballero-Benitez", "I. B. Mekhov"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "We show that the effect of measurement backaction results in the generation of multiple many-body spatial modes of ultracold atoms trapped in an optical lattice, when scattered light is detected. The multipartite mode entanglement properties and their nontrivial spatial overlap can be varied by tuning the optical geometry in a single setup. This can be used to engineer quantum states and dynamics of matter fields. We provide examples of multimode generalizations of parametric down-conversion, Dicke, and other states; investigate the entanglement properties of such states; and show how they can be transformed into a class of generalized squeezed states. Furthermore, we propose how these modes can be used to detect and measure entanglement in quantum gases."
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abstract = "We show that the effect of measurement backaction results in the generation of multiple many-body spatial modes of ultracold atoms trapped in an optical lattice, when scattered light is detected. The multipartite mode entanglement properties and their nontrivial spatial overlap can be varied by tuning the optical geometry in a single setup. This can be used to engineer quantum states and dynamics of matter fields. We provide examples of multimode generalizations of parametric down-conversion, Dicke, and other states; investigate the entanglement properties of such states; and show how they can be transformed into a class of generalized squeezed states. Furthermore, we propose how these modes can be used to detect and measure entanglement in quantum gases."
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featured = false
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featured = false
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publication = "*Physical Review Letters*"
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publication = "*Physical Review Letters 114, 113604*"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevLett.114.113604"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevLett.114.113604"
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url_preprint = "https://arxiv.org/abs/1412.4680"
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url_preprint = "https://arxiv.org/abs/1412.4680"
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doi = "10.1103/PhysRevLett.114.113604"
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doi = "10.1103/PhysRevLett.114.113604"
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title = "Probing matter-field and atom-number correlations in optical lattices by global nondestructive addressing"
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title = "Probing matter-field and atom-number correlations in optical lattices by global nondestructive addressing"
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date = 2015-07-01
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date = 2015-07-10
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authors = ["W. Kozlowski", "S. F. Caballero-Benitez", "I. B. Mekhov"]
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authors = ["W. Kozlowski", "S. F. Caballero-Benitez", "I. B. Mekhov"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "We show that light scattering from an ultracold gas reveals not only density correlations, but also matter-field interference at its shortest possible distance in an optical lattice, which defines key properties such as tunneling and matter-field phase gradients. This signal can be enhanced by concentrating probe light between lattice sites rather than at density maxima. As addressing between two single sites is challenging, we focus on global nondestructive scattering, allowing probing order parameters, matter-field quadratures, and their squeezing. The scattering angular distribution displays peaks even if classical diffraction is forbidden and we derive generalized Bragg conditions. Light scattering distinguishes all phases in the Mott insulator–superfluid–Bose glass phase transition."
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abstract = "We show that light scattering from an ultracold gas reveals not only density correlations, but also matter-field interference at its shortest possible distance in an optical lattice, which defines key properties such as tunneling and matter-field phase gradients. This signal can be enhanced by concentrating probe light between lattice sites rather than at density maxima. As addressing between two single sites is challenging, we focus on global nondestructive scattering, allowing probing order parameters, matter-field quadratures, and their squeezing. The scattering angular distribution displays peaks even if classical diffraction is forbidden and we derive generalized Bragg conditions. Light scattering distinguishes all phases in the Mott insulator–superfluid–Bose glass phase transition."
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featured = false
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featured = false
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publication = "*Physical Review A*"
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publication = "*Physical Review A 92, 013613*"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevA.92.013613"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevA.92.013613"
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url_preprint = "https://arxiv.org/abs/1411.7567"
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url_preprint = "https://arxiv.org/abs/1411.7567"
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doi = "10.1103/PhysRevA.92.013613"
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doi = "10.1103/PhysRevA.92.013613"
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title = "Probing and Manipulating Fermionic and Bosonic Quantum Gases with Quantum Light"
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title = "Probing and Manipulating Fermionic and Bosonic Quantum Gases with Quantum Light"
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date = 2015-09-01
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date = 2015-09-02
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authors = ["Thomas J. Elliott", "Gabriel Mazzucchi", "Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Igor B. Mekhov"]
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authors = ["Thomas J. Elliott", "Gabriel Mazzucchi", "Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Igor B. Mekhov"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "We study the atom-light interaction in the fully quantum regime, with the focus on off-resonant light scattering into a cavity from ultracold atoms trapped in an optical lattice. The detection of photons allows the quantum nondemolition (QND) measurement of quantum correlations of the atomic ensemble, distinguishing between different quantum states. We analyse the entanglement between light and matter and show how it can be exploited for realising multimode macroscopic quantum superpositions, such as Schrödinger cat states, for both bosons and fermions. We provide examples utilising different measurement schemes and study their robustness to decoherence. Finally, we address the regime where the optical lattice potential is a quantum dynamical variable and is modified by the atomic state, leading to novel quantum phases and significantly altering the phase diagram of the atomic system."
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abstract = "We study the atom-light interaction in the fully quantum regime, with the focus on off-resonant light scattering into a cavity from ultracold atoms trapped in an optical lattice. The detection of photons allows the quantum nondemolition (QND) measurement of quantum correlations of the atomic ensemble, distinguishing between different quantum states. We analyse the entanglement between light and matter and show how it can be exploited for realising multimode macroscopic quantum superpositions, such as Schrödinger cat states, for both bosons and fermions. We provide examples utilising different measurement schemes and study their robustness to decoherence. Finally, we address the regime where the optical lattice potential is a quantum dynamical variable and is modified by the atomic state, leading to novel quantum phases and significantly altering the phase diagram of the atomic system."
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featured = false
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featured = false
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publication = "*Atoms*"
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publication = "*Atoms 2015, 3(3), 392-406*"
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tags = ["cavity QED", "many-body quantum systems", "quantum light-matter interactions", "quantum nondemolition measurement"]
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tags = ["cavity QED", "many-body quantum systems", "quantum light-matter interactions", "quantum nondemolition measurement"]
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url_pdf = "https://www.mdpi.com/2218-2004/3/3/392"
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url_pdf = "https://www.mdpi.com/2218-2004/3/3/392"
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url_preprint = "https://arxiv.org/abs/1506.07700"
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url_preprint = "https://arxiv.org/abs/1506.07700"
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title = "Quantum measurement-induced dynamics of many-body ultracold bosonic and fermionic systems in optical lattices"
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title = "Quantum measurement-induced dynamics of many-body ultracold bosonic and fermionic systems in optical lattices"
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date = 2016-02-01
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date = 2016-02-19
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authors = ["Gabriel Mazzucchi", "Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Thomas J. Elliott", "Igor B. Mekhov"]
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authors = ["Gabriel Mazzucchi", "Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Thomas J. Elliott", "Igor B. Mekhov"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "Trapping ultracold atoms in optical lattices enabled numerous breakthroughs uniting several disciplines. Coupling these systems to quantized light leads to a plethora of new phenomena and has opened up a new field of study. Here we introduce an unusual additional source of competition in a many-body strongly correlated system: We prove that quantum backaction of global measurement is able to efficiently compete with intrinsic short-range dynamics of an atomic system. The competition becomes possible due to the ability to change the spatial profile of a global measurement at a microscopic scale comparable to the lattice period without the need of single site addressing. In coherence with a general physical concept, where new competitions typically lead to new phenomena, we demonstrate nontrivial dynamical effects such as large-scale multimode oscillations, long-range entanglement, and correlated tunneling, as well as selective suppression and enhancement of dynamical processes beyond the projective limit of the quantum Zeno effect. We demonstrate both the breakup and protection of strongly interacting fermion pairs by measurement. Such a quantum optical approach introduces into many-body physics novel processes, objects, and methods of quantum engineering, including the design of many-body entangled environments for open systems."
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abstract = "Trapping ultracold atoms in optical lattices enabled numerous breakthroughs uniting several disciplines. Coupling these systems to quantized light leads to a plethora of new phenomena and has opened up a new field of study. Here we introduce an unusual additional source of competition in a many-body strongly correlated system: We prove that quantum backaction of global measurement is able to efficiently compete with intrinsic short-range dynamics of an atomic system. The competition becomes possible due to the ability to change the spatial profile of a global measurement at a microscopic scale comparable to the lattice period without the need of single site addressing. In coherence with a general physical concept, where new competitions typically lead to new phenomena, we demonstrate nontrivial dynamical effects such as large-scale multimode oscillations, long-range entanglement, and correlated tunneling, as well as selective suppression and enhancement of dynamical processes beyond the projective limit of the quantum Zeno effect. We demonstrate both the breakup and protection of strongly interacting fermion pairs by measurement. Such a quantum optical approach introduces into many-body physics novel processes, objects, and methods of quantum engineering, including the design of many-body entangled environments for open systems."
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featured = false
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featured = false
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publication = "*Physical Review A*"
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publication = "*Physical Review A 93, 023632*"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevA.93.023632"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevA.93.023632"
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url_preprint = "https://arxiv.org/abs/1503.08710"
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url_preprint = "https://arxiv.org/abs/1503.08710"
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doi = "10.1103/PhysRevA.93.023632"
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doi = "10.1103/PhysRevA.93.023632"
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title = "Collective dynamics of multimode bosonic systems induced by weak quantum measurement"
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title = "Collective dynamics of multimode bosonic systems induced by weak quantum measurement"
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date = 2016-07-01
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date = 2016-07-08
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authors = ["Gabriel Mazzucchi", "Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Igor B. Mekhov"]
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authors = ["Gabriel Mazzucchi", "Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Igor B. Mekhov"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "In contrast to the fully projective limit of strong quantum measurement, where the evolution is locked to a small subspace (quantum Zeno dynamics), or even frozen completely (quantum Zeno effect), the weak non-projective measurement can effectively compete with standard unitary dynamics leading to nontrivial effects. Here we consider global weak measurement addressing collective variables, thus preserving quantum superpositions due to the lack of which path information. While for certainty we focus on ultracold atoms, the idea can be generalized to other multimode quantum systems, including various quantum emitters, optomechanical arrays, and purely photonic systems with multiple-path interferometers (photonic circuits). We show that light scattering from ultracold bosons in optical lattices can be used for defining macroscopically occupied spatial modes that exhibit long-range coherent dynamics. Even if the measurement strength remains constant, the quantum measurement backaction acts on the atomic ensemble quasi-periodically and induces collective oscillatory dynamics of all the atoms. We introduce an effective model for the evolution of the spatial modes and present an analytic solution showing that the quantum jumps drive the system away from its stable point. We confirm our finding describing the atomic observables in terms of stochastic differential equations."
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abstract = "In contrast to the fully projective limit of strong quantum measurement, where the evolution is locked to a small subspace (quantum Zeno dynamics), or even frozen completely (quantum Zeno effect), the weak non-projective measurement can effectively compete with standard unitary dynamics leading to nontrivial effects. Here we consider global weak measurement addressing collective variables, thus preserving quantum superpositions due to the lack of which path information. While for certainty we focus on ultracold atoms, the idea can be generalized to other multimode quantum systems, including various quantum emitters, optomechanical arrays, and purely photonic systems with multiple-path interferometers (photonic circuits). We show that light scattering from ultracold bosons in optical lattices can be used for defining macroscopically occupied spatial modes that exhibit long-range coherent dynamics. Even if the measurement strength remains constant, the quantum measurement backaction acts on the atomic ensemble quasi-periodically and induces collective oscillatory dynamics of all the atoms. We introduce an effective model for the evolution of the spatial modes and present an analytic solution showing that the quantum jumps drive the system away from its stable point. We confirm our finding describing the atomic observables in terms of stochastic differential equations."
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featured = false
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featured = false
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publication = "*New Journal of Physics*"
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publication = "*New Journal of Physics 18 073017*"
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url_pdf = "https://doi.org/10.1088%2F1367-2630%2F18%2F7%2F073017"
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url_pdf = "https://doi.org/10.1088%2F1367-2630%2F18%2F7%2F073017"
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url_preprint = "https://arxiv.org/abs/1603.04889"
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url_preprint = "https://arxiv.org/abs/1603.04889"
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doi = "10.1088/1367-2630/18/7/073017"
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doi = "10.1088/1367-2630/18/7/073017"
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title = "Non-Hermitian dynamics in the quantum Zeno limit"
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title = "Non-Hermitian dynamics in the quantum Zeno limit"
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date = 2016-07-01
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date = 2016-07-29
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authors = ["W. Kozlowski", "S. F. Caballero-Benitez", "I. B. Mekhov"]
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authors = ["W. Kozlowski", "S. F. Caballero-Benitez", "I. B. Mekhov"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "We show that weak measurement leads to unconventional quantum Zeno dynamics with Raman-like transitions via virtual states outside the Zeno subspace. We extend this concept into the realm of non-Hermitian dynamics by showing that the stochastic competition between measurement and a system's own dynamics can be described by a non-Hermitian Hamiltonian. We obtain a solution for ultracold bosons in a lattice and show that a dark state of tunneling is achieved as a steady state in which the observable's fluctuations are zero and tunneling is suppressed by destructive matter-wave interference."
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abstract = "We show that weak measurement leads to unconventional quantum Zeno dynamics with Raman-like transitions via virtual states outside the Zeno subspace. We extend this concept into the realm of non-Hermitian dynamics by showing that the stochastic competition between measurement and a system's own dynamics can be described by a non-Hermitian Hamiltonian. We obtain a solution for ultracold bosons in a lattice and show that a dark state of tunneling is achieved as a steady state in which the observable's fluctuations are zero and tunneling is suppressed by destructive matter-wave interference."
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featured = false
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featured = false
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publication = "*Physical Review A*"
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publication = "*Physical Review A 94, 012123*"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevA.94.012123"
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url_pdf = "https://link.aps.org/doi/10.1103/PhysRevA.94.012123"
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url_preprint = "https://arxiv.org/abs/1510.04857"
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url_preprint = "https://arxiv.org/abs/1510.04857"
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doi = "10.1103/PhysRevA.94.012123"
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doi = "10.1103/PhysRevA.94.012123"
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title = "Quantum State Reduction by Matter-Phase-Related Measurements in Optical Lattices"
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title = "Quantum State Reduction by Matter-Phase-Related Measurements in Optical Lattices"
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date = 2017-02-01
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date = 2017-02-22
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authors = ["Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Igor B. Mekhov"]
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authors = ["Wojciech Kozlowski", "Santiago F. Caballero-Benitez", "Igor B. Mekhov"]
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publication_types = ["2"]
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publication_types = ["2"]
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abstract = "A many-body atomic system coupled to quantized light is subject to weak measurement. Instead of coupling light to the on-site density, we consider the quantum backaction due to the measurement of matter-phase-related variables such as global phase coherence. We show how this unconventional approach opens up new opportunities to affect system evolution. We demonstrate how this can lead to a new class of final states different from those possible with dissipative state preparation or conventional projective measurements. These states are characterised by a combination of Hamiltonian and measurement properties thus extending the measurement postulate for the case of strong competition with the system’s own evolution."
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abstract = "A many-body atomic system coupled to quantized light is subject to weak measurement. Instead of coupling light to the on-site density, we consider the quantum backaction due to the measurement of matter-phase-related variables such as global phase coherence. We show how this unconventional approach opens up new opportunities to affect system evolution. We demonstrate how this can lead to a new class of final states different from those possible with dissipative state preparation or conventional projective measurements. These states are characterised by a combination of Hamiltonian and measurement properties thus extending the measurement postulate for the case of strong competition with the system’s own evolution."
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featured = false
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featured = false
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publication = "*Scientific Reports*"
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publication = "*Scientific Reports 7, Article number: 42597*"
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url_pdf = "https://www.nature.com/articles/srep42597"
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url_pdf = "https://www.nature.com/articles/srep42597"
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url_preprint = "https://arxiv.org/abs/1605.06000"
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url_preprint = "https://arxiv.org/abs/1605.06000"
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doi = "10.1038/srep42597"
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doi = "10.1038/srep42597"
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@ -5,7 +5,7 @@ authors = ["Wojciech Kozlowski", "Stephanie Wehner"]
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publication_types = ["1"]
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publication_types = ["1"]
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abstract = "The vision of a quantum internet is to fundamentally enhance Internet technology by enabling quantum communication between any two points on Earth. While the first realisations of small scale quantum networks are expected in the near future, scaling such networks presents immense challenges to physics, computer science and engineering. Here, we provide a gentle introduction to quantum networking targeted at computer scientists, and survey the state of the art. We proceed to discuss key challenges for computer science in order to make such networks a reality."
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abstract = "The vision of a quantum internet is to fundamentally enhance Internet technology by enabling quantum communication between any two points on Earth. While the first realisations of small scale quantum networks are expected in the near future, scaling such networks presents immense challenges to physics, computer science and engineering. Here, we provide a gentle introduction to quantum networking targeted at computer scientists, and survey the state of the art. We proceed to discuss key challenges for computer science in order to make such networks a reality."
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featured = false
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featured = false
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publication = "*Proceedings of the Sixth Annual ACM International Conference on Nanoscale Computing and Communication*"
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publication = "*In Proceedings of the Sixth Annual ACM International Conference on Nanoscale Computing and Communication (NANOCOM '19), Article 3, 1–7*"
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url_pdf = "https://dl.acm.org/citation.cfm?doid=3345312.3345497"
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url_pdf = "https://dl.acm.org/citation.cfm?doid=3345312.3345497"
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url_preprint = "https://arxiv.org/abs/1909.08396"
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url_preprint = "https://arxiv.org/abs/1909.08396"
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doi = "10.1145/3345312.3345497"
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doi = "10.1145/3345312.3345497"
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title = "Designing a Quantum Network Protocol"
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title = "Designing a Quantum Network Protocol"
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date = 2020-10-06
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date = 2020-11-24
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authors = ["Wojciech Kozlowski", "Axel Dahlberg", "Stephanie Wehner"]
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authors = ["Wojciech Kozlowski", "Axel Dahlberg", "Stephanie Wehner"]
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publication_types = ["1"]
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publication_types = ["1"]
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abstract = "The second quantum revolution brings with it the promise of a quantum internet. As the first quantum network hardware prototypes near completion new challenges emerge. A functional network is more than just the physical hardware, yet work on scalable quantum network systems is in its infancy. In this paper we present a quantum network protocol designed to enable end-to-end quantum communication in the face of the new fundamental and technical challenges brought by quantum mechanics. We develop a quantum data plane protocol that enables end-to-end quantum communication and can serve as a building block for more complex services. One of the key challenges in near-term quantum technology is decoherence --- the gradual decay of quantum information --- which imposes extremely stringent limits on storage times. Our protocol is designed to be efficient in the face of short quantum memory lifetimes. We demonstrate this using a simulator for quantum networks and show that the protocol is able to deliver its service even in the face of significant losses due to decoherence. Finally, we conclude by showing that the protocol remains functional on the extremely resource limited hardware that is being developed today underlining the timeliness of this work."
|
abstract = "The second quantum revolution brings with it the promise of a quantum internet. As the first quantum network hardware prototypes near completion new challenges emerge. A functional network is more than just the physical hardware, yet work on scalable quantum network systems is in its infancy. In this paper we present a quantum network protocol designed to enable end-to-end quantum communication in the face of the new fundamental and technical challenges brought by quantum mechanics. We develop a quantum data plane protocol that enables end-to-end quantum communication and can serve as a building block for more complex services. One of the key challenges in near-term quantum technology is decoherence --- the gradual decay of quantum information --- which imposes extremely stringent limits on storage times. Our protocol is designed to be efficient in the face of short quantum memory lifetimes. We demonstrate this using a simulator for quantum networks and show that the protocol is able to deliver its service even in the face of significant losses due to decoherence. Finally, we conclude by showing that the protocol remains functional on the extremely resource limited hardware that is being developed today underlining the timeliness of this work."
|
||||||
featured = true
|
featured = true
|
||||||
|
publication = "*In Proceedings of the 16th International Conference on emerging Networking EXperiments and Technologies (CoNEXT '20), 1–16*"
|
||||||
url_pdf = "https://dl.acm.org/doi/abs/10.1145/3386367.3431293"
|
url_pdf = "https://dl.acm.org/doi/abs/10.1145/3386367.3431293"
|
||||||
url_preprint = "https://arxiv.org/abs/2010.02575"
|
url_preprint = "https://arxiv.org/abs/2010.02575"
|
||||||
doi = "10.1145/3386367.3431293"
|
doi = "10.1145/3386367.3431293"
|
@ -1,10 +1,11 @@
|
|||||||
+++
|
+++
|
||||||
title = "A P4 Data Plane for the Quantum Internet"
|
title = "A P4 Data Plane for the Quantum Internet"
|
||||||
date = 2020-10-21
|
date = 2020-12-01
|
||||||
authors = ["Wojciech Kozlowski", "Fernando Kuipers", "Stephanie Wehner"]
|
authors = ["Wojciech Kozlowski", "Fernando Kuipers", "Stephanie Wehner"]
|
||||||
publication_types = ["1"]
|
publication_types = ["1"]
|
||||||
abstract = "The quantum technology revolution brings with it the promise of a quantum internet. A new --- quantum --- network stack will be needed to account for the fundamentally new properties of quantum entanglement. The first realisations of quantum networks are imminent and research interest in quantum network protocols has started growing. In the non-quantum world, programmable data planes have broken the pattern of ossification of the protocol stack and enabled a new --- software-defined --- network software architecture. Similarly, a programmable quantum data plane could pave the way for a software-defined quantum network architecture. In this paper, we demonstrate how we use P4$_{16}$ to explore abstractions and device architectures for quantum networks."
|
abstract = "The quantum technology revolution brings with it the promise of a quantum internet. A new --- quantum --- network stack will be needed to account for the fundamentally new properties of quantum entanglement. The first realisations of quantum networks are imminent and research interest in quantum network protocols has started growing. In the non-quantum world, programmable data planes have broken the pattern of ossification of the protocol stack and enabled a new --- software-defined --- network software architecture. Similarly, a programmable quantum data plane could pave the way for a software-defined quantum network architecture. In this paper, we demonstrate how we use P4$_{16}$ to explore abstractions and device architectures for quantum networks."
|
||||||
featured = false
|
featured = false
|
||||||
|
publication = "*In Proceedings of the 3rd P4 Workshop in Europe (EuroP4'20), 49–51*"
|
||||||
url_pdf = "https://dl.acm.org/doi/10.1145/3426744.3431321"
|
url_pdf = "https://dl.acm.org/doi/10.1145/3426744.3431321"
|
||||||
url_preprint = "https://arxiv.org/abs/2010.11263"
|
url_preprint = "https://arxiv.org/abs/2010.11263"
|
||||||
doi = "10.1145/3426744.3431321"
|
doi = "10.1145/3426744.3431321"
|
@ -5,7 +5,7 @@ authors = ["Axel Dahlberg", "Bart van der Vecht", "Carlo Delle Donne", "Matthew
|
|||||||
publication_types = ["2"]
|
publication_types = ["2"]
|
||||||
abstract = "We introduce NetQASM, a low-level instruction set architecture for quantum internet applications. NetQASM is a universal, platform-independent and extendable instruction set with support for local quantum gates, powerful classical logic and quantum networking operations for remote entanglement generation. Furthermore, NetQASM allows for close integration of classical logic and communication at the application layer with quantum operations at the physical layer. This enables quantum network applications to be programmed in high-level platform-independent software, which is not possible using any other QASM variants. We implement NetQASM in a series of tools to write, parse, encode and run NetQASM code, which are available online. Our tools include a higher-level software development kit (SDK) in Python, which allows an easy way of programming applications for a quantum internet. Our SDK can be used at home by making use of our existing quantum simulators, NetSquid and SimulaQron, and will also provide a public interface to hardware released on a future iteration of Quantum Network Explorer."
|
abstract = "We introduce NetQASM, a low-level instruction set architecture for quantum internet applications. NetQASM is a universal, platform-independent and extendable instruction set with support for local quantum gates, powerful classical logic and quantum networking operations for remote entanglement generation. Furthermore, NetQASM allows for close integration of classical logic and communication at the application layer with quantum operations at the physical layer. This enables quantum network applications to be programmed in high-level platform-independent software, which is not possible using any other QASM variants. We implement NetQASM in a series of tools to write, parse, encode and run NetQASM code, which are available online. Our tools include a higher-level software development kit (SDK) in Python, which allows an easy way of programming applications for a quantum internet. Our SDK can be used at home by making use of our existing quantum simulators, NetSquid and SimulaQron, and will also provide a public interface to hardware released on a future iteration of Quantum Network Explorer."
|
||||||
featured = false
|
featured = false
|
||||||
publication = "*Quantum Science and Technology*"
|
publication = "*Quantum Science and Technology 7 035023*"
|
||||||
url_pdf = "https://iopscience.iop.org/article/10.1088/2058-9565/ac753f/meta"
|
url_pdf = "https://iopscience.iop.org/article/10.1088/2058-9565/ac753f/meta"
|
||||||
url_preprint = "https://arxiv.org/abs/2111.09823"
|
url_preprint = "https://arxiv.org/abs/2111.09823"
|
||||||
doi = "10.1088/2058-9565/ac753f"
|
doi = "10.1088/2058-9565/ac753f"
|
Before Width: | Height: | Size: 45 KiB After Width: | Height: | Size: 45 KiB |
@ -1,10 +1,13 @@
|
|||||||
+++
|
+++
|
||||||
title = "Experimental demonstration of entanglement delivery using a quantum network stack"
|
title = "Experimental demonstration of entanglement delivery using a quantum network stack"
|
||||||
date = 2021-11-22
|
date = 2022-10-15
|
||||||
authors = ["Matteo Pompili", "Carlo Delle Donne", "Ingmar te Raa", "Bart van der Vecht", "Matthew Skrzypczyk", "Guilherme Ferreira", "Lisa de Kluijver", "Arian J. Stolk", "Sophie L. N. Hermans", "Przemysław Pawełczak", "Wojciech Kozlowski", "Ronald Hanson", "Stephanie Wehner"]
|
authors = ["Matteo Pompili", "Carlo Delle Donne", "Ingmar te Raa", "Bart van der Vecht", "Matthew Skrzypczyk", "Guilherme Ferreira", "Lisa de Kluijver", "Arian J. Stolk", "Sophie L. N. Hermans", "Przemysław Pawełczak", "Wojciech Kozlowski", "Ronald Hanson", "Stephanie Wehner"]
|
||||||
publication_types = ["3"]
|
publication_types = ["2"]
|
||||||
abstract = "Scaling current quantum communication demonstrations to a large-scale quantum network will require not only advancements in quantum hardware capabilities, but also robust control of such devices to bridge the gap to user demand. Moreover, the abstraction of tasks and services offered by the quantum network should enable platform-independent applications to be executed without knowledge of the underlying physical implementation. Here we experimentally demonstrate, using remote solid-state quantum network nodes, a link layer and a physical layer protocol for entanglement-based quantum networks. The link layer abstracts the physical-layer entanglement attempts into a robust, platform-independent entanglement delivery service. The system is used to run full state tomography of the delivered entangled states, as well as preparation of a remote qubit state on a server by its client. Our results mark a clear transition from physics experiments to quantum communication systems, which will enable the development and testing of components of future quantum networks."
|
abstract = "Scaling current quantum communication demonstrations to a large-scale quantum network will require not only advancements in quantum hardware capabilities, but also robust control of such devices to bridge the gap to user demand. Moreover, the abstraction of tasks and services offered by the quantum network should enable platform-independent applications to be executed without knowledge of the underlying physical implementation. Here we experimentally demonstrate, using remote solid-state quantum network nodes, a link layer and a physical layer protocol for entanglement-based quantum networks. The link layer abstracts the physical-layer entanglement attempts into a robust, platform-independent entanglement delivery service. The system is used to run full state tomography of the delivered entangled states, as well as preparation of a remote qubit state on a server by its client. Our results mark a clear transition from physics experiments to quantum communication systems, which will enable the development and testing of components of future quantum networks."
|
||||||
featured = true
|
featured = true
|
||||||
|
publication = "*npj Quantum Information 8, Article number: 121*"
|
||||||
|
url_pdf = "https://www.nature.com/articles/s41534-022-00631-2"
|
||||||
url_preprint = "https://arxiv.org/abs/2111.11332"
|
url_preprint = "https://arxiv.org/abs/2111.11332"
|
||||||
|
doi = "10.1038/s41534-022-00631-2"
|
||||||
+++
|
+++
|
||||||
|
|
@ -1,14 +0,0 @@
|
|||||||
@article{dahlberg_netqasm_2022,
|
|
||||||
title = {{NetQASM}—a low-level instruction set architecture for hybrid quantum–classical programs in a quantum internet},
|
|
||||||
volume = {7},
|
|
||||||
issn = {2058-9565},
|
|
||||||
doi = {10.1088/2058-9565/ac753f},
|
|
||||||
language = {en},
|
|
||||||
number = {3},
|
|
||||||
journal = {Quantum Science and Technology},
|
|
||||||
author = {Dahlberg, Axel and Vecht, Bart van der and Donne, Carlo Delle and Skrzypczyk, Matthew and Raa, Ingmar te and Kozlowski, Wojciech and Wehner, Stephanie},
|
|
||||||
month = jun,
|
|
||||||
year = {2022},
|
|
||||||
note = {Publisher: IOP Publishing},
|
|
||||||
pages = {035023},
|
|
||||||
}
|
|
@ -1,6 +0,0 @@
|
|||||||
@article{deventer2022towards,
|
|
||||||
author={van Deventer, O. and Spethmann, N. and Loeffler, M. and Amoretti, M. and Brink, R. van den and Bruno, N. and Comi, P. and Farrugia, N. and Gramegna, M. and Kassenberg, B. and Kozlowski, W. and Länger, T. and Lindstrom, T. and Martin, V. and Neumann, N. and Papadopoulos, H. and Pascazio, S. and Peev, M. and Pitwon, R. and Rol, M. A. and Traina, P. and Venderbosch, P. and Wilhelm-Mauch, F. K. and Jenet, A.},
|
|
||||||
title={Towards European Standards for Quantum Technologies},
|
|
||||||
year={2022}
|
|
||||||
journal={arXiv preprint arXiv:2203.01622},
|
|
||||||
}
|
|
@ -1,12 +0,0 @@
|
|||||||
@article{elliott_multipartite_2015,
|
|
||||||
author = {Elliott, T. J. and Kozlowski, W. and Caballero-Benitez, S. F. and Mekhov, I. B.},
|
|
||||||
doi = {10.1103/PhysRevLett.114.113604},
|
|
||||||
journal = {Physical Review Letters},
|
|
||||||
month = {March},
|
|
||||||
number = {11},
|
|
||||||
pages = {113604},
|
|
||||||
title = {Multipartite Entangled Spatial Modes of Ultracold Atoms Generated and Controlled by Quantum Measurement},
|
|
||||||
volume = {114},
|
|
||||||
year = {2015}
|
|
||||||
}
|
|
||||||
|
|
@ -1,12 +0,0 @@
|
|||||||
@article{elliott_probing_2015,
|
|
||||||
author = {Elliott, Thomas J. and Mazzucchi, Gabriel and Kozlowski, Wojciech and Caballero-Benitez, Santiago F. and Mekhov, Igor B.},
|
|
||||||
doi = {10.3390/atoms3030392},
|
|
||||||
journal = {Atoms},
|
|
||||||
month = {September},
|
|
||||||
number = {3},
|
|
||||||
pages = {392--406},
|
|
||||||
title = {Probing and Manipulating Fermionic and Bosonic Quantum Gases with Quantum Light},
|
|
||||||
volume = {3},
|
|
||||||
year = {2015}
|
|
||||||
}
|
|
||||||
|
|
@ -1,14 +0,0 @@
|
|||||||
@article{granqvist_buffering_2012,
|
|
||||||
author = {Granqvist, Emma and Wysham, Derin and Hazledine, Saul and Kozlowski, Wojciech and Sun, Jongho and Charpentier, Myriam and Martins, Teresa Vaz and Haleux, Pauline and Tsaneva-Atanasova, Krasimira and Downie, J. Allan and Oldroyd, Giles E. D. and Morris, Richard J.},
|
|
||||||
doi = {10.1104/pp.112.205682},
|
|
||||||
issn = {0032-0889, 1532-2548},
|
|
||||||
journal = {Plant Physiology},
|
|
||||||
month = {December},
|
|
||||||
number = {4},
|
|
||||||
pages = {2300--2310},
|
|
||||||
pmid = {23027664},
|
|
||||||
title = {Buffering Capacity Explains Signal Variation in Symbiotic Calcium Oscillations},
|
|
||||||
volume = {160},
|
|
||||||
year = {2012}
|
|
||||||
}
|
|
||||||
|
|
@ -1,16 +0,0 @@
|
|||||||
@inproceedings{kozlowski_designing_2020,
|
|
||||||
author = {Kozlowski, Wojciech and Dahlberg, Axel and Wehner, Stephanie},
|
|
||||||
title = {Designing a Quantum Network Protocol},
|
|
||||||
year = {2020},
|
|
||||||
isbn = {9781450379489},
|
|
||||||
publisher = {Association for Computing Machinery},
|
|
||||||
address = {New York, NY, USA},
|
|
||||||
url = {https://doi.org/10.1145/3386367.3431293},
|
|
||||||
doi = {10.1145/3386367.3431293},
|
|
||||||
booktitle = {Proceedings of the 16th International Conference on Emerging Networking EXperiments and Technologies},
|
|
||||||
pages = {1–16},
|
|
||||||
numpages = {16},
|
|
||||||
keywords = {quantum communication, quantum networks, quantum internet},
|
|
||||||
location = {Barcelona, Spain},
|
|
||||||
series = {CoNEXT '20}
|
|
||||||
}
|
|
@ -1,8 +0,0 @@
|
|||||||
@phdthesis{kozlowski_dphil_2016,
|
|
||||||
author = {Kozlowski, Wojciech},
|
|
||||||
school = {University of Oxford},
|
|
||||||
month = {September},
|
|
||||||
title = {Competition between weak quantum measurement and many-body dynamics in ultracold bosonic gases},
|
|
||||||
year = {2016}
|
|
||||||
}
|
|
||||||
|
|
@ -1,12 +0,0 @@
|
|||||||
@article{kozlowski_non-hermitian_2016,
|
|
||||||
author = {Kozlowski, W. and Caballero-Benitez, S. F. and Mekhov, I. B.},
|
|
||||||
doi = {10.1103/PhysRevA.94.012123},
|
|
||||||
journal = {Physical Review A},
|
|
||||||
month = {July},
|
|
||||||
number = {1},
|
|
||||||
pages = {012123},
|
|
||||||
title = {Non-Hermitian dynamics in the quantum Zeno limit},
|
|
||||||
volume = {94},
|
|
||||||
year = {2016}
|
|
||||||
}
|
|
||||||
|
|
@ -1,16 +0,0 @@
|
|||||||
@inproceedings{kozlowski_p4_2020,
|
|
||||||
author = {Kozlowski, Wojciech and Kuipers, Fernando and Wehner, Stephanie},
|
|
||||||
title = {A P4 Data Plane for the Quantum Internet},
|
|
||||||
year = {2020},
|
|
||||||
isbn = {9781450381819},
|
|
||||||
publisher = {Association for Computing Machinery},
|
|
||||||
address = {New York, NY, USA},
|
|
||||||
url = {https://doi.org/10.1145/3426744.3431321},
|
|
||||||
doi = {10.1145/3426744.3431321},
|
|
||||||
booktitle = {Proceedings of the 3rd P4 Workshop in Europe},
|
|
||||||
pages = {49–51},
|
|
||||||
numpages = {3},
|
|
||||||
keywords = {quantum data plane, programmable networks, quantum networks, P4, quantum internet, quantum communication},
|
|
||||||
location = {Barcelona, Spain},
|
|
||||||
series = {EuroP4'20}
|
|
||||||
}
|
|
@ -1,12 +0,0 @@
|
|||||||
@article{kozlowski_probing_2015,
|
|
||||||
author = {Kozlowski, W. and Caballero-Benitez, S. F. and Mekhov, I. B.},
|
|
||||||
doi = {10.1103/PhysRevA.92.013613},
|
|
||||||
journal = {Physical Review A},
|
|
||||||
month = {July},
|
|
||||||
number = {1},
|
|
||||||
pages = {013613},
|
|
||||||
title = {Probing matter-field and atom-number correlations in optical lattices by global nondestructive addressing},
|
|
||||||
volume = {92},
|
|
||||||
year = {2015}
|
|
||||||
}
|
|
||||||
|
|
@ -1,12 +0,0 @@
|
|||||||
@article{kozlowski_quantum_2017,
|
|
||||||
author = {Kozlowski, Wojciech and Caballero-Benitez, Santiago F. and Mekhov, Igor B.},
|
|
||||||
doi = {10.1038/srep42597},
|
|
||||||
issn = {2045-2322},
|
|
||||||
journal = {Scientific Reports},
|
|
||||||
month = {February},
|
|
||||||
pages = {42597},
|
|
||||||
title = {Quantum State Reduction by Matter-Phase-Related Measurements in Optical Lattices},
|
|
||||||
volume = {7},
|
|
||||||
year = {2017}
|
|
||||||
}
|
|
||||||
|
|
@ -1,18 +0,0 @@
|
|||||||
@inproceedings{kozlowski_towards_2019,
|
|
||||||
author = {Kozlowski, Wojciech and Wehner, Stephanie},
|
|
||||||
title = {Towards Large-Scale Quantum Networks},
|
|
||||||
booktitle = {Proceedings of the Sixth Annual ACM International Conference on Nanoscale Computing and Communication},
|
|
||||||
series = {NANOCOM '19},
|
|
||||||
year = {2019},
|
|
||||||
isbn = {978-1-4503-6897-1},
|
|
||||||
location = {Dublin, Ireland},
|
|
||||||
pages = {3:1--3:7},
|
|
||||||
articleno = {3},
|
|
||||||
numpages = {7},
|
|
||||||
url = {http://doi.acm.org/10.1145/3345312.3345497},
|
|
||||||
doi = {10.1145/3345312.3345497},
|
|
||||||
acmid = {3345497},
|
|
||||||
publisher = {ACM},
|
|
||||||
address = {New York, NY, USA},
|
|
||||||
keywords = {network protocols, networks, quantum communications, quantum computing, quantum internet, quantum networks},
|
|
||||||
}
|
|
@ -1,13 +0,0 @@
|
|||||||
@article{mazzucchi_collective_2016,
|
|
||||||
author = {Mazzucchi, Gabriel and Kozlowski, Wojciech and Caballero-Benitez, Santiago F. and Mekhov, Igor B.},
|
|
||||||
doi = {10.1088/1367-2630/18/7/073017},
|
|
||||||
issn = {1367-2630},
|
|
||||||
journal = {New Journal of Physics},
|
|
||||||
month = {July},
|
|
||||||
number = {7},
|
|
||||||
pages = {073017},
|
|
||||||
title = {Collective dynamics of multimode bosonic systems induced by weak quantum measurement},
|
|
||||||
volume = {18},
|
|
||||||
year = {2016}
|
|
||||||
}
|
|
||||||
|
|
@ -1,12 +0,0 @@
|
|||||||
@article{mazzucchi_quantum_2016,
|
|
||||||
author = {Mazzucchi, Gabriel and Kozlowski, Wojciech and Caballero-Benitez, Santiago F. and Elliott, Thomas J. and Mekhov, Igor B.},
|
|
||||||
doi = {10.1103/PhysRevA.93.023632},
|
|
||||||
journal = {Physical Review A},
|
|
||||||
month = {February},
|
|
||||||
number = {2},
|
|
||||||
pages = {023632},
|
|
||||||
title = {Quantum measurement-induced dynamics of many-body ultracold bosonic and fermionic systems in optical lattices},
|
|
||||||
volume = {93},
|
|
||||||
year = {2016}
|
|
||||||
}
|
|
||||||
|
|
@ -1,6 +0,0 @@
|
|||||||
@article{pompili_experimental_2021,
|
|
||||||
author={Pompili, Matteo and Donne, Carlo Delle and Raa, Ingmar te and van der Vecht, Bart and Skrzypczyk, Matthew and Ferreira, Guilherme and de Kluijver, Lisa and Stolk, Arian J and Hermans, Sophie LN and Pawe{\l}czak, Przemys{\l}aw and others},
|
|
||||||
title={Experimental demonstration of entanglement delivery using a quantum network stack},
|
|
||||||
year={2021}
|
|
||||||
journal={arXiv preprint arXiv:2111.11332},
|
|
||||||
}
|
|
Loading…
Reference in New Issue
Block a user