Observation of coherent oscillations in association of dimers from a thermal gas of ultracold atoms

• URL: http://arxiv.org/abs/2209.03872v2
• Date: Sun, 2 Apr 2023 09:51:24 GMT
• Title: Observation of coherent oscillations in association of dimers from a thermal gas of ultracold atoms
• Authors: Roy Elbaz, Yaakov Yudkin, P. Giannakeas, Jan-Michael Rost, Chris H. Greene, and Lev Khaykovich
• Abstract summary: Finite thermal energy of the gas causes loss of coherence when a broad continuum is resonantly coupled to a discrete bound state. Non-adiabatic transitions of the dressed molecular energy level are induced by a strong modulation pulse with fast envelope dynamics. The observed results may lead to a renewed interest in general studies of a discrete energy level coupled to a broadband continuum when the properties of both are fully controlled.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report the observation of coherent oscillations in conversion efficiency of weakly-bound dimers formed from a thermal gas of ultracold atoms. Finite thermal energy of the gas causes loss of coherence when a broad continuum is resonantly coupled to a discrete bound state. Restoration of the coherence can be achieved through non-adiabatic transitions of the dressed molecular energy level that are induced by a strong modulation pulse with fast envelope dynamics. Conditions to observe coherent oscillations are verified, and control of their properties is demonstrated. The main experimental findings are supported by theoretical modeling and numerical calculations. The observed results may lead to a renewed interest in general studies of a discrete energy level coupled to a broadband continuum when the properties of both are fully controlled.

Related papers

• Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions [34.82692226532414]
  We study subradiance in a Bose-Einstein condensate positioned at the mode crossing of two optical cavities. metastable density structures that suppress emission into one cavity mode prevent relaxation to the stationary, superradiant grating. We reproduce these dynamics by a quantum mean field model, suggesting that subradiance shares characteristics with quasi-stationary states predicted in other long-range interacting systems.
  arXiv  Detail & Related papers  (2024-07-12T12:47:07Z)
• Frequency-resolved Purcell effect for the dissipative generation of steady-state entanglement [49.1574468325115]
  We report a driven-dissipative mechanism to generate stationary entangled $W$ states among strongly-interacting quantum emitters placed within a cavity. The non-harmonic energy structure of the interacting ensemble allows this transition to be resonantly selected by the cavity. Evidence of this purely dissipative mechanism should be observable in state-of-the-art cavity QED systems in the solid-state.
  arXiv  Detail & Related papers  (2023-12-19T18:04:22Z)
• Thermal self-oscillations in monolayer graphene coupled to a superconducting microwave cavity [58.720142291102135]
  We observe thermal self-oscillations in a monolayer graphene flake coupled to superconducting resonator. The experimental observations fit well with theoretical model based on thermal instability. The modelling of the oscillation sidebands provides a method to evaluate electron phonon coupling in disordered graphene sample at low energies.
  arXiv  Detail & Related papers  (2022-05-27T15:38:41Z)
• Generalized resonance energy transfer theory: Applications to vibrational energy flow in optical cavities [0.0]
  General rate theory for resonance energy transfer incorporates degrees of freedom, rotation, vibration, exciton, and polariton. compact rate expression allows us to establish useful relationships. When applied to cavity-assisted vibrational energy transfer, the rate formalism provides an intuitive and quantitative explanation.
  arXiv  Detail & Related papers  (2022-01-27T17:34:04Z)
• Effect of Emitters on Quantum State Transfer in Coupled Cavity Arrays [48.06402199083057]
  We study the effects of atoms in cavities which can absorb and emit photons as they propagate down the array. Our model is equivalent to previously examined spin chains in the one-excitation sector and in the absence of emitters.
  arXiv  Detail & Related papers  (2021-12-10T18:52:07Z)
• Cavity-Altered Thermal Isomerization Rates and Dynamical Resonant Localization in Vibro-Polaritonic Chemistry [0.0]
  Reaction rates for molecules embedded in microfluidic optical cavities are altered when compared to rates observed under "ordinary" reaction conditions. We study how strong coupling of an optical cavity mode to molecular vibrations affect the reactivity and how resonance behavior emerges.
  arXiv  Detail & Related papers  (2021-09-28T09:06:08Z)
• Beyond the Rabi model: light interactions with polar atomic systems in a cavity [0.0]
  The Rabi Hamiltonian describes the interaction between a two-level atomic system and a single cavity mode of the electromagnetic field. In this work we consider the most general Rabi model, incorporating the effects of permanent atomic electric dipole moments.
  arXiv  Detail & Related papers  (2021-03-20T19:54:17Z)
• Observation of quasiparticle pair-production and quantum entanglement in atomic quantum gases quenched to an attractive interaction [0.0]
  We report observation of quasiparticle pair-production and characterize quantum entanglement created by a modulational instability in an atomic superfluid. By quenching the atomic interaction to attractive and then back to weakly repulsive, we produce correlated quasiparticles. We observe large amplitude growth in the power spectrum and subsequent coherent oscillations in a wide spatial frequency band within our resolution limit.
  arXiv  Detail & Related papers  (2021-02-22T17:45:04Z)
• 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)
• 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)
• High-energy Bragg scattering measurements of a dipolar supersolid [0.0]
  Using Bragg spectroscopy, we study the scattering response of the system to a high-energy probe. We experimentally observe a continuous reduction of the response when tuning the contact interaction from an ordinary Bose-Einstein condensate to a supersolid state.
  arXiv  Detail & Related papers  (2020-05-04T16:18:15Z)

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.