Fluctuation-dissipation relation for a Bose-Einstein condensate of photons
arXiv:2203.13255 · doi:10.1103/PhysRevLett.130.033602
Abstract
For equilibrium systems, the magnitude of thermal fluctuations is closely linked to the dissipative response to external perturbations. This fluctuation-dissipation relation has been described for material particles in a wide range of fields. Here we experimentally probe the relation between the number fluctuations and the response function for a Bose-Einstein condensate of photons coupled to a dye reservoir, demonstrating the fluctuation-dissipation relation for a quantum gas of light. The observed agreement of the scale factor with the environment temperature both directly confirms the thermal nature of the optical condensate and demonstrates the validity of the fluctuation-dissipation theorem for a Bose-Einstein condensate.
arXiv comment5 pages, 4 figures
References in corpus (29)
- Bose-Einstein condensation of photons in an optical microcavity
- The effective temperature
- Observation of scale invariance and universality in two-dimensional Bose gases
- Observations of density fluctuations in an elongated Bose gas: ideal gas and quasi-condensate regimes
- Bose-Einstein Condensation of Long-Lifetime Polaritons in Thermal Equilibrium
- Quantum Degenerate Exciton-Polaritons in Thermal Equilibrium
- Polariton Condensation in an optically induced 2D potentia
- Observation of grand-canonical number statistics in a photon Bose-Einstein condensate
- Suppression of Density Fluctuations in a Quantum Degenerate Fermi Gas
- Spontaneous coherence in spatially extended photonic systems: Non-Equilibrium Bose-Einstein condensation
- Fluctuation-dissipation relations and critical quenches in the transverse field Ising chain
- Statistical physics of Bose-Einstein condensed light in a dye microcavity
- Experimental Evidence for Inhomogeneous-Pumping and Energy-Dependent Effects in Photon Bose-Einstein Condensation
- Observation of a non-Hermitian phase transition in an optical quantum gas
- Thermalization kinetics of light: From laser dynamics to equilibrium condensation of photons
- Observation of first and second sound in a BKT superfluid
- Unstable and stable regimes of polariton condensation
- Observation of quantum depletion in a nonequilibrium exciton-polariton condensate
- Density Distribution of a Bose-Einstein Condensate of Photons in a Dye-Filled Microcavity
- Dynamic correlations, fluctuation-dissipation relations, and effective temperatures after a quantum quench of the transverse field Ising chain
- Observation of Atom Number Fluctuations in a Bose-Einstein Condensate
- Spontaneous symmetry breaking and phase coherence of a photon Bose-Einstein condensate coupled to a reservoir
- Compressibility and the Equation of State of an Optical Quantum Gas in a Box
- Hierarchical maximum entropy principle for generalized superstatistical systems and Bose-Einstein condensation of light
- Observation of Microcanonical Atom Number Fluctuations in a Bose-Einstein Condensate
- Dynamics and correlations of a Bose-Einstein condensate of photons
- Observing atom bunching by the Fourier slice theorem
- Classical field model for arrays of photon condensates
- Reservoir optics with exciton-polariton condensates
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- Observation of Nonlinear Response and Onsager Regression in a Photon Bose-Einstein Condensate
- Identifying and anticipating the threshold bifurcation of a complex laser with permutation entropy
- Time-periodic driving of a bath-coupled open quantum gas of light
- On the fluctuations of the number of atoms in the condensate
- Canonical vs. Grand Canonical Ensemble for Bosonic Gases under Harmonic Confinement
- Photonic Bose-Einstein condensation in the continuum limit
- Stabilizing open photon condensates by ghost-attractor dynamics
- Dynamic control of the Bose-Einstein-like condensation transition in scalar active matter