Quantum hydrodynamics of a polariton fluid: pure energy relaxation terms

• URL: http://arxiv.org/abs/2504.06360v1
• Date: Tue, 08 Apr 2025 18:14:26 GMT
• Title: Quantum hydrodynamics of a polariton fluid: pure energy relaxation terms
• Authors: D. A. Saltykova, A. V. Yulin, I. A. Shelykh,
• Abstract summary: Cavity polaritons are hybrid half-light half-matter excitations in quantum microcavities.<n>We derive the corresponding equations where the energy relaxation term appears naturally.<n>Although we focus on the case of cavity polaritons, our approach can be applied to other cases of bosonic condensates.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 BEC and superfluidity at surprisingly 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.

Related papers

• Analysis of exciton-polariton condensation under different pumping schemes for 1D and 2D microcavities including the effect of strong correlation between polaritons [0.0]
  We simulate exciton-polariton condensation using the finite-difference and 4th order Runge-Kutta methods.<n>This is done for coherent, near-resonant pumping as well as homogeneous, incoherent, non-resonant pumping.
  arXiv  Detail & Related papers  (2025-01-06T12:05:01Z)
• Quantum optical scattering by macroscopic lossy objects: A general approach [55.2480439325792]
  We develop a general approach to describe the scattering of quantum light by a lossy macroscopic object placed in vacuum. We exploit the input-output relation to connect the output state of the field to the input one. We analyze the impact of the classical transmission and absorption dyadics on the transitions from ingoing to outgoing s-polariton.
  arXiv  Detail & Related papers  (2024-11-27T17:44:29Z)
• Emergent Fracton Hydrodynamics in the Fractional Quantum Hall Regime of Ultracold Atoms [41.94295877935867]
  We show that in the lowest Landau level the system generically relaxes subdiffusively. The slow relaxation is understood from emergent conservation laws of the total charge. We discuss the prospect of rotating quantum gases as well as ultracold atoms in optical lattices for observing this unconventional relaxation dynamics.
  arXiv  Detail & Related papers  (2024-10-09T18:00:02Z)
• Bound polariton states in the Dicke-Ising model [41.94295877935867]
  We present a study of hybrid light-matter excitations in cavity QED materials. We derive the exact excitations of the system in the thermodynamic limit.
  arXiv  Detail & Related papers  (2024-06-17T18:00:01Z)
• Chiral quantum heating and cooling with an optically controlled ion [15.029218109713296]
  Quantum heat engines and refrigerators are open quantum systems, whose dynamics can be well understood using a non-Hermitian formalism. We demonstrate, using a Paul-trapped ultracold ion, the first chiral quantum heating and refrigeration by dynamically encircling a closed loop. Our experiments have revealed that not only the adiabaticity-breakdown but also the Landau-Zener-St"uckelberg process play an essential role during dynamic encircling.
  arXiv  Detail & Related papers  (2024-05-29T09:31:55Z)
• Generalized energy gap law: An open system dynamics approach to non-adiabatic phenomena in molecules [0.0]
  Non-adiabatic molecular phenomena govern the fate of virtually all photo-physical and photochemical processes. A simple and elegant description, the energy gap law, was derived five decades ago. We revisit and extend this theory to account for crucial aspects such as vibrational relaxation, dephasing, and radiative loss.
  arXiv  Detail & Related papers  (2024-05-14T15:59:58Z)
• Quantum thermodynamics of driven-dissipative condensates [0.0]
  Polariton condensates occur away from thermal equilibrium, in an open system where heat and particles are continually exchanged with reservoirs. We construct a few-level model that captures the main processes involved in the buildup of a ground-state population of polaritons. This allows condensation to be understood as the output of a thermal machine and exposes the thermodynamic constraints on its occurrence.
  arXiv  Detail & Related papers  (2024-03-11T16:13:58Z)
• Dynamical Spectral Response of Fractonic Quantum Matter [0.0]
  We study the low-energy excitations of a constrained Bose-Hubbard model in one dimension. We show the existence of gapped excitations compatible with strong coupling results.
  arXiv  Detail & Related papers  (2023-10-24T18:00:01Z)
• Dissipative preparation of a Floquet topological insulator in an optical lattice via bath engineering [44.99833362998488]
  Floquet engineering is an important tool for realizing charge-neutral atoms in optical lattices. We show that a driven-dissipative system approximates a topological insulator.
  arXiv  Detail & Related papers  (2023-07-07T17:47:50Z)
• Collective flow of fermionic impurities immersed in a Bose-Einstein Condensate [34.82692226532414]
  We study the collective oscillations of spin-polarized fermionic impurities immersed in a Bose-Einstein condensate. For strong interactions, the Fermi gas perfectly mimics the superfluid hydrodynamic modes of the condensate. With an increasing number of bosonic thermal excitations, the dynamics of the impurities cross over from the collisionless to the hydrodynamic regime.
  arXiv  Detail & Related papers  (2023-04-16T00:58:05Z)
• A Quantum-Classical Model of Brain Dynamics [62.997667081978825]
  Mixed Weyl symbol is used to describe brain processes at the microscopic level. Electromagnetic fields and phonon modes involved in the processes are treated either classically or semi-classically. Zero-point quantum effects can be incorporated into numerical simulations by controlling the temperature of each field mode.
  arXiv  Detail & Related papers  (2023-01-17T15:16:21Z)
• Quantum Fluctuations and Coherence of a Molecular Polariton Condensate [0.5801044612920816]
  A full quantum theory is developed for an exciton polariton condensate. The polariton nonlinearity causing fast relaxation correlated with the pump so as to yield the condensation at threshold. The results signify the role of dark states for polariton fluctuations, and lead to a nonclassical counting statistics of emitted photons.
  arXiv  Detail & Related papers  (2022-04-28T14:27:05Z)
• Probing eigenstate thermalization in quantum simulators via fluctuation-dissipation relations [77.34726150561087]
  The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems. Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations. Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
  arXiv  Detail & Related papers  (2020-07-20T18:00:02Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.