Search Results - "Léonard, Julian"
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1
A kicked quasicrystal
Published in Nature physics (01-03-2024)“…Quasicrystals are ordered but not periodic, which makes them fascinating objects at the interface between order and disorder. Experiments with ultracold atoms…”
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2
Supersolid formation in a quantum gas breaking a continuous translational symmetry
Published in Nature (London) (02-03-2017)“…A supersolid with continuous translational symmetry breaking along one direction is realized by symmetrically coupling a Bose–Einstein condensate to the modes…”
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3
Monitoring and manipulating Higgs and Goldstone modes in a supersolid quantum gas
Published in Science (American Association for the Advancement of Science) (15-12-2017)“…Higgs and Goldstone modes are collective excitations of the amplitude and phase of an order parameter that is related to the breaking of a continuous symmetry…”
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4
Quantum critical behaviour at the many-body localization transition
Published in Nature (London) (01-09-2019)“…Phase transitions are driven by collective fluctuations of a system’s constituents that emerge at a critical point 1 . This mechanism has been extensively…”
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5
Realization of a fractional quantum Hall state with ultracold atoms
Published in Nature (London) (20-07-2023)“…Strongly interacting topological matter 1 exhibits fundamentally new phenomena with potential applications in quantum information technology 2 , 3 . Emblematic…”
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6
Probing the onset of quantum avalanches in a many-body localized system
Published in Nature physics (01-04-2023)“…Strongly correlated systems can exhibit unexpected phenomena when brought in a state far from equilibrium. An example is many-body localization, which prevents…”
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7
Coupling two order parameters in a quantum gas
Published in Nature materials (01-08-2018)“…Controlling matter to simultaneously support coupled properties is of fundamental and technological importance 1 (for example, in multiferroics 2 – 5 or…”
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8
Superfluid behaviour of a two-dimensional Bose gas
Published in Nature physics (01-09-2012)“…Two-dimensional Bose fluids—such as liquid-helium films, or confined ultracold atoms—cannot form a condensate, but become superfluid instead. Frictionless…”
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9
Optical transport and manipulation of an ultracold atomic cloud using focus-tunable lenses
Published in New journal of physics (23-09-2014)“…We present an optical setup with focus-tunable lenses to dynamically control the waist and focus position of a laser beam, in which we transport a trapped…”
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10
Probing entanglement in a many-body-localized system
Published in Science (American Association for the Advancement of Science) (19-04-2019)“…An interacting quantum system that is subject to disorder may cease to thermalize owing to localization of its constituents, thereby marking the breakdown of…”
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11
Bayesian Optimization for Robust State Preparation in Quantum Many-Body Systems
Published in Quantum (Vienna, Austria) (27-06-2024)“…New generations of ultracold-atom experiments are continually raising the demand for efficient solutions to optimal control problems. Here, we apply Bayesian…”
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12
Bayesian Optimization for Robust State Preparation in Quantum Many-Body Systems
Published 20-06-2024“…Quantum 8, 1388 (2024) New generations of ultracold-atom experiments are continually raising the demand for efficient solutions to optimal control problems…”
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13
Realization of a fractional quantum Hall state with ultracold atoms
Published 29-10-2022“…Nature 619, 495-499 (2023) Strongly interacting topological matter exhibits fundamentally new phenomena with potential applications in quantum information…”
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14
Adiabatic State Preparation in a Quantum Ising Spin Chain
Published 11-04-2024“…We report on adiabatic state preparation in the one-dimensional quantum Ising model using ultracold bosons in a tilted optical lattice. We prepare many-body…”
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15
Signatures of bath-induced quantum avalanches in a many-body--localized system
Published 18-11-2022“…Nature Physics 19, 481-485 (2023) Strongly correlated systems can exhibit surprising phenomena when brought in a state far from equilibrium. A spectacular…”
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16
Bosonic Pfaffian State in the Hofstadter-Bose-Hubbard Model
Published 22-03-2021“…Phys. Rev. B 103, 161101 (2021) Topological states of matter, such as fractional quantum Hall states, are an active field of research due to their exotic…”
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17
Scalable Hamiltonian learning for large-scale out-of-equilibrium quantum dynamics
Published 01-03-2021“…Large-scale quantum devices provide insights beyond the reach of classical simulations. However, for a reliable and verifiable quantum simulation, the building…”
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18
Coupling two order parameters in a quantum gas
Published 18-12-2017“…Nature materials 17, 686-690 (2018) Controlling matter to simultaneously support multiple coupled properties is of fundamental and technological importance…”
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19
Monitoring and manipulating Higgs and Goldstone modes in a supersolid quantum gas
Published 19-04-2017“…Science 358, 1415-1418 (2017) Access to collective excitations lies at the heart of our understanding of quantum many-body systems. We study the Higgs and…”
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20
Supersolid formation in a quantum gas breaking continuous translational symmetry
Published 28-09-2016“…Nature 543, 87-90 (2017) The concept of a supersolid state is paradoxical. It combines the crystallization of a many-body system with dissipationless flow of…”
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