Related papers: Phase alignment in a lattice of exciton-polaritonic Bose-Einstein condensates

Phase alignment in a lattice of exciton-polaritonic Bose-Einstein condensates

URL: http://arxiv.org/abs/2505.07999v1
Date: Mon, 12 May 2025 19:01:49 GMT
Title: Phase alignment in a lattice of exciton-polaritonic Bose-Einstein condensates
Authors: N. V. Kuznetsova, D. V. Makarov, N. A. Asriyan, A. A. Elistratov,
Abstract summary: Dynamics of exciton-polariton Bose-Einstein condensate is examined by means of the Gross-Pitaevskii equation.<n>Attention is concentrated on properties of the condensate lattice created by laser beams providing incoherent pumping of the reservoir.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Dynamics of exciton-polariton Bose-Einstein condensate is examined by means of the stochastic Gross-Pitaevskii equation including non-Markovian coupling to the excitonic reservoir. Attention is concentrated on properties of the condensate lattice created by laser beams providing incoherent pumping of the reservoir. It is shown that phase ordering of the lattice depends on temperature. The crossover between the in-phase (``ferromagnetic'') and the checkboard (``antiferromagnetic'') orders is accompanied by variation of the steady-state condensate density. Also it is shown that the condensate lattices can retain ordered pattern for temperatures which are much higher than the critical temperature of a single spot, probably due to suppression of the modulational instability.

Related papers

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)
Probing quantum floating phases in Rydberg atom arrays [61.242961328078245]
We experimentally observe the emergence of the quantum floating phase in 92 neutral-atom qubits. The site-resolved measurement reveals the formation of domain walls within the commensurate ordered phase. As the experimental system sizes increase, we show that the wave vectors approach a continuum of values incommensurate with the lattice.
arXiv Detail & Related papers (2024-01-16T03:26:36Z)
Occupancy-driven Zeeman suppression and inversion in trapped polariton condensates [8.740132189485855]
We study the magneto-photoluminescence of an optically trapped exciton-polariton condensate in a semiconductor microcavity with multiple In0.08Ga0.92As quantum wells. We observe polariton Zeeman splitting and, in small traps with tight confinement, demonstrate its full parametric screening. For larger optical traps, we observe a complete inversion in the Zeeman splitting as a function of power, underlining the importance of condensate confinement and interactions with its background reservoir excitons.
arXiv Detail & Related papers (2023-08-10T05:44:49Z)
Fragmented superconductivity in the Hubbard model as solitons in Ginzburg-Landau theory [39.58317527488534]
Superconductivity and charge density waves are observed in close vicinity in strongly correlated materials. We investigate the nature of such an intertwined state of matter stabilized in the phase diagram of the elementary $t$-$tprime$-$U$ Hubbard model. We provide conclusive evidence that the macroscopic wave functions of the superconducting fragments are well-described by soliton solutions of a Ginzburg-Landau equation.
arXiv Detail & Related papers (2023-07-21T18:00:07Z)
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)
Phase diagram of Rydberg-dressed atoms on two-leg triangular ladders [50.591267188664666]
We investigate the phase diagram of hard-core bosons in a triangular ladder with next-to-nearest-neighbor interaction along each leg. For weak interactions, Abelian bosonization predicts a spin density wave and a fully gapless Luttinger liquid phase. The competition with the zigzag interaction generates a charge density wave, a 'polarized holonic' phase, and a crystalline phase at the filling 2/5.
arXiv Detail & Related papers (2022-07-01T12:49:04Z)
Floquet-heating-induced Bose condensation in a scar-like mode of an open driven optical-lattice system [62.997667081978825]
We show that the interplay of bath-induced dissipation and controlled Floquet heating can give rise to non-equilibrium Bose condensation. Our predictions are based on a microscopic model that is solved using kinetic equations of motion derived from Floquet-Born-Markov theory.
arXiv Detail & Related papers (2022-04-14T17:56:03Z)
Multi-band Bose-Einstein condensate at four-particle scattering resonance [47.187609203210705]
We show that magnon quantization for thin samples results in a new multi-band magnon condensate. The most stable multi-band condensate is found in a narrow regime favoured on account of a resonance in the scattering between two bands.
arXiv Detail & Related papers (2022-01-26T16:32:58Z)
Metastable spin-phase diagrams in antiferromagnetic Bose-Einstein condensates [0.0]
We study theoretically the metastable spin-phase diagram of a spin-1 antiferromagnetic Bose-Einstein condensate at zero and finite temperatures. Results are consistent with recent experiments and allow us to explain qualitatively the different types of observed quench dynamics.
arXiv Detail & Related papers (2021-09-05T03:47:59Z)
Self-organized PT-symmetry of exciton-polariton condensate in a double-well potential [0.0]
We investigate the dynamics and stationary states of a semiconductor exciton-polariton condensate in a double well potential. We find that upon the population build up of the polaritons by above-threshold laser pumping, coherence relaxation due to the phase fluctuations of the polaritons drives the system into a stable fixed point corresponding to a self-organized PT-symmetric phase.
arXiv Detail & Related papers (2021-07-04T16:20:13Z)
Exact analytical solution for density matrix of a non-equilibrium polariton Bose-Einstein condensate [0.0]
We find the density matrix of a non-equilibrium polariton Bose-Einstein condensate (BEC) Despite the non-equilibrium nature of polariton systems, we show the average population of polariton states exhibits the Bose-Einstein distribution with an almost zero effective chemical potential above the condensation threshold similar to an equilibrium BEC.
arXiv Detail & Related papers (2021-05-06T20:29:01Z)
Multimode-polariton superradiance via Floquet engineering [55.41644538483948]
We consider an ensemble of ultracold bosonic atoms within a near-planar cavity, driven by a far detuned laser. We show that a strong, dispersive atom-photon coupling can be reached for many transverse cavity modes at once. The resulting Floquet polaritons involve a superposition of a set of cavity modes with a density of excitation of the atomic cloud.
arXiv Detail & Related papers (2020-11-24T19:00:04Z)
Parallel dark soliton pair in a bistable 2D exciton-polariton superfluid [47.187609203210705]
2D dark solitons are unstable and collapse into vortices due to snake instabilities. We demonstrate that a pair of dark solitons can be formed in the wake of an obstacle in a polariton flow resonantly supported by a homogeneous laser beam.
arXiv Detail & Related papers (2020-03-25T13:52:22Z)

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