Search Results - "Vewinger, Frank"
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Observation of a non-Hermitian phase transition in an optical quantum gas
Published in Science (American Association for the Advancement of Science) (02-04-2021)“…Quantum gases of light, such as photon or polariton condensates in optical microcavities, are collective quantum systems enabling a tailoring of dissipation…”
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2
Observation of grand-canonical number statistics in a photon Bose-Einstein condensate
Published in Physical review letters (21-01-2014)“…We report measurements of particle number correlations and fluctuations of a photon Bose-Einstein condensate in a dye microcavity using a Hanbury Brown-Twiss…”
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3
Thermalization of a two-dimensional photonic gas in a 'white wall' photon box
Published in Nature physics (01-07-2010)“…Bose-Einstein condensation, the macroscopic accumulation of bosonic particles in the energetic ground state below a critical temperature, has been demonstrated…”
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4
First-order spatial coherence measurements in a thermalized two-dimensional photonic quantum gas
Published in Nature communications (31-07-2017)“…Phase transitions between different states of matter can profoundly modify the order in physical systems, with the emergence of ferromagnetic or topological…”
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5
Collective modes of a photon Bose-Einstein condensate with thermo-optic interaction
Published in New journal of physics (01-10-2019)“…Although for photon Bose-Einstein condensates the main mechanism of the observed photon-photon interaction has already been identified to be of a thermo-optic…”
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6
Calorimetry of a Bose–Einstein-condensed photon gas
Published in Nature communications (19-04-2016)“…Phase transitions, as the condensation of a gas to a liquid, are often revealed by a discontinuous behaviour of thermodynamic quantities. For liquid helium,…”
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7
Resonance beating of light stored using atomic spinor polaritons
Published in Physical review letters (24-10-2008)“…We investigate the storage of light in atomic rubidium vapor using a multilevel-tripod scheme. In the system, two collective dark polariton modes exist,…”
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8
Observation of nonlinear response and Onsager regression in a photon Bose-Einstein condensate
Published in Nature communications (03-06-2024)“…The quantum regression theorem states that the correlations of a system at two different times are governed by the same equations of motion as the single-time…”
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9
Variable potentials for thermalized light and coupled condensates
Published in Nature photonics (01-09-2017)“…Variable micropotentials for light are created by thermo-optic imprinting of a dye–polymer solution within a microcavity. A thermalized photon Bose–Einstein…”
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10
Statistical physics of Bose-Einstein-condensed light in a dye microcavity
Published in Physical review letters (20-04-2012)“…We theoretically analyze the temperature behavior of paraxial light in thermal equilibrium with a dye-filled optical microcavity. At low temperatures the…”
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11
Thermally condensing photons into a coherently split state of light
Published in Science (American Association for the Advancement of Science) (15-11-2019)“…The quantum state of light plays a crucial role in a wide range of fields, from quantum information science to precision measurements. Whereas complex quantum…”
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12
Dimensional crossover in a quantum gas of light
Published in Nature physics (06-09-2024)“…The dimensionality of a system profoundly influences its physical behaviour, leading to the emergence of different states of matter in many-body quantum…”
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13
Bose-Einstein Condensation of Photons in a Four-Site Quantum Ring
Published in Physical review letters (30-08-2024)“…Thermalization of radiation by contact to matter is a well-known concept, but the application of thermodynamic methods to complex quantum states of light…”
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14
Fluctuation-Dissipation Relation for a Bose-Einstein Condensate of Photons
Published in Physical review letters (20-01-2023)“…For equilibrium systems, the magnitude of thermal fluctuations is closely linked to the dissipative response to external perturbations. This…”
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15
Realizing arbitrary trapping potentials for light via direct laser writing of mirror surface profiles
Published in Europhysics letters (01-06-2020)“…The versatility of quantum gas experiments greatly benefits from the ability to apply variable potentials. Here we describe a method which allows the…”
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16
Bose-Einstein condensation of photons in an optical microcavity
Published in Nature (London) (25-11-2010)“…Bose-Einstein condensation (BEC)-the macroscopic ground-state accumulation of particles with integer spin (bosons) at low temperature and high density-has been…”
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17
Spontaneous Symmetry Breaking and Phase Coherence of a Photon Bose-Einstein Condensate Coupled to a Reservoir
Published in Physical review letters (22-01-2016)“…We examine the phase evolution of a Bose-Einstein condensate of photons generated in a dye microcavity by temporal interference with a phase reference. The…”
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18
Compressibility and the equation of state of an optical quantum gas in a box
Published in Science (American Association for the Advancement of Science) (25-03-2022)“…The compressibility of a medium, quantifying its response to mechanical perturbations, is a fundamental property determined by the equation of state. For gases…”
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Realizing arbitrary trapping potentials for light via direct laser writing of mirror surface profiles(a)(a)Contribution to the Focus Issue Turbulent Regimes in Bose-Einstein Condensates edited by Alessandra Lanotte, Iacopo Carusotto and Alberto Bramati
Published in Europhysics letters (23-06-2020)“…The versatility of quantum gas experiments greatly benefits from the ability to apply variable potentials. Here we describe a method which allows the…”
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20
Rubidium spectroscopy at high-pressure buffer gas conditions: detailed balance in the optical interaction of an absorber coupled to a reservoir
Published in Physica scripta (01-12-2018)“…Optical spectroscopy of atoms and molecules is a field where one usually operates very far from thermal equilibrium conditions. A prominent example is…”
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