Loss induced collective mode in one-dimensional Bose gases

• URL: http://arxiv.org/abs/2402.05824v1
• Date: Thu, 8 Feb 2024 17:04:04 GMT
• Title: Loss induced collective mode in one-dimensional Bose gases
• Authors: Jeff Maki, Lorenzo Rosso, Leonardo Mazza, Alberto Biella
• Abstract summary: We show that two-body losses induce a collective excitation in a harmonically trapped one-dimensional Bose gas. We find clear coherent oscillations in both the potential and kinetic energies as well as in the phase space quadrupole mode of the gas.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We show that two-body losses induce a collective excitation in a harmonically trapped one-dimensional Bose gas, even in the absence of a quench in the trap or any other external perturbation. Focusing on the dissipatively fermionized regime, we perform an exact mode expansion of the rapidity distribution function and characterize the emergence of the collective motion. We find clear coherent oscillations in both the potential and kinetic energies as well as in the phase space quadrupole mode of the gas. We also discuss how this loss induced collective mode differs from the well known breathing mode studied in the absence of dissipation.

Related papers

• Gapless Floquet topology [40.2428948628001]
  We study the existence of topological edge zero- and pi-modes despite the lack of bulk gaps in the quasienergy spectrum. We numerically study the effect of interactions, which give a finite lifetime to the edge modes in the thermodynamic limit with the decay rate consistent with Fermi's Golden Rule.
  arXiv  Detail & Related papers  (2024-11-04T19:05:28Z)
• Probing pair correlations in Fermi gases with Ramsey-Bragg interferometry [41.94295877935867]
  We propose an interferometric method to probe pair correlations in a gas of spin-1/2 fermions. The method consists of a Ramsey sequence where both spin states of the Fermi gas are set in a superposition of a state at rest and a state with a large recoil velocity. The off-diagonal long-range order is directly reflected in the behavior of the interferometric signal for long interrogation times.
  arXiv  Detail & Related papers  (2023-12-21T15:46:29Z)
• Observation of subdiffusive dynamic scaling in a driven and disordered Bose gas [0.0]
  We study the dynamics of a tuneable box-trapped Bose gas under strong periodic forcing. In absence of interparticle interactions, the interplay of the drive and disorder results in an isotropic nonthermal momentum distribution.
  arXiv  Detail & Related papers  (2023-04-13T17:50:22Z)
• Sufficient condition for gapless spin-boson Lindbladians, and its connection to dissipative time-crystals [64.76138964691705]
  We discuss a sufficient condition for gapless excitations in the Lindbladian master equation for collective spin-boson systems. We argue that gapless modes can lead to persistent dynamics in the spin observables with the possible formation of dissipative time-crystals.
  arXiv  Detail & Related papers  (2022-09-26T18:34:59Z)
• Position- and momentum-space two-body correlations in a weakly interacting trapped condensate [0.0]
  We investigate a weakly interacting, harmonically trapped atomic Bose-Einstein condensed gas at low temperatures. In the position space, we recover the anti-bunching induced by the repulsive inter-atomic interaction. In the momentum space, bunching signatures appear for either equal or opposite values of the momentum.
  arXiv  Detail & Related papers  (2020-08-29T19:22:55Z)
• Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
  We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas. Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit. The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
  arXiv  Detail & Related papers  (2020-08-05T18:00:26Z)
• The effect of atom losses on the distribution of rapidities in the one-dimensional Bose gas [0.0]
  We investigate the effects of atom losses in the one-dimensional (1D) Bose gas with repulsive contact interactions. We assume that the loss rate is much smaller than the rate of intrinsic relaxation of the system. We show that losses affect the rapidity distribution in a non-trivial way.
  arXiv  Detail & Related papers  (2020-06-05T17:56:20Z)
• Quench dynamics of a weakly interacting disordered Bose gas in momentum space [0.0]
  We study the out-of-equilibrium dynamics in momentum space of a weakly interacting disordered Bose gas launched with a finite velocity. We find that the dynamics is governed by coupled kinetic equations describing the thermalization of the diffusive and coherent components of the gas.
  arXiv  Detail & Related papers  (2020-06-03T07:34:51Z)
• Entanglement dynamics in dissipative photonic Mott insulators [62.997667081978825]
  In spite of particle losses the quantum entanglement propagation exhibits a ballistic character with propagation speeds related to the differerent quasiparticles that are involved in the dynamics. Our analysis reveals that photon dissipation has a strikingly asymmetric behavior in the two configurations with a much more dramatic role on the holon entanglement propagation than for the doublon case.
  arXiv  Detail & Related papers  (2020-04-27T15:48:24Z)
• Nonadiabatic energy fluctuations of scale-invariant quantum systems in a time-dependent trap [0.0]
  We consider the nonadiabatic energy fluctuations of a many-body system in a time-dependent harmonic trap. Our results pave the way to the experimental study of nonadiabatic energy fluctuations in driven quantum fluids.
  arXiv  Detail & Related papers  (2020-04-09T14:49:31Z)
• Zitterbewegung and Klein-tunneling phenomena for transient quantum waves [77.34726150561087]
  We show that the Zitterbewegung effect manifests itself as a series of quantum beats of the particle density in the long-time limit. We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront. The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime.
  arXiv  Detail & Related papers  (2020-03-09T21:27:02Z)

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.