Quantum hydrodynamics of a polariton fluid: pure energy relaxation terms
arXiv:2504.06360 · doi:10.1103/1m12-wvk8
Abstract
Cavity polaritons, hybrid half-light half-matter excitations in quantum microcavities in the strong-coupling regime demonstrate clear signatures of quantum collective behavior, such as analogues of Bose-Einstein condensate and superfluidity at remarkably high temperatures. The analysis of the formation of these states demands an account of the relaxation processes in the system. Although there are well-established approaches for the description of some of them, such as finite lifetime polariton, an external optical pump, and coupling with an incoherent excitonic reservoir, the treatment of pure energy relaxation in a polariton fluid still remains a puzzle. Here, based on the quantum hydrodynamics approach, we derive the corresponding equations where the energy relaxation term appears naturally. We analyze in detail how it affects the dynamics of polariton droplets and the dispersion of elementary excitations of a uniform polariton condensate. Although we focus on the case of cavity polaritons, our approach can be applied to other cases of bosonic condensates, where the processes of energy relaxation play an important role.
arXiv comment6 pages + 4 pages of Supplementary Materials
References in corpus (12)
- Quantum fluids of light
- Observation of Superfluidity of Polaritons in Semiconductor Microcavities
- Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons
- Room-temperature superfluidity in a polariton condensate
- Stochastic properties of systems controlled by autocatalytic reactions II
- Energy Relaxation in a 1-D Polariton Condensate
- Spatial pattern formation and polarization dynamics of a nonequilibrium spinor polariton condensate
- Hybrid Boltzmann Gross-Pitaevskii Theory of Bose-Einstein Condensation and Superfluidity in Open Driven-Dissipative Systems
- Macroscopic Two-Dimensional Polariton Condensates
- Ghost Branch Photoluminescence From a Polariton Fluid Under Nonresonant Excitation
- New perspectives on superfluidity in resonantly--driven polariton fluids
- Spectrum of collective excitations of a quantum fluid of polaritons