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[期刊论文]

Entanglement beating in a cavity optomechanical system under two-field driving

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author:

Hu, Chang-Sheng (Hu, Chang-Sheng.) [1] | Liu, Zhi-Qiang (Liu, Zhi-Qiang.) [2] | Liu, Ye (Liu, Ye.) [3] | Unfold

Indexed by:

EI Scopus SCIE

Abstract:

An optomechanical cavity driven by a periodically amplitude-modulated laser can generate steady light-mechanical entanglement with time periodicity. Similar results can be alternatively obtained by pumping an especially tuned optical degenerate parametric amplifier (DPA) inside the cavity. While the two laser beams are simultaneously applied, the optomechanical entanglement can exhibit constructive and destructive interference patterns, depending on their cooperative phase, which further gives rise to beating in entanglement dynamics if the two modulation frequencies are slightly different, followed by a beating frequency-dependent dynamical behavior in the energy exchange between light and a mechanical oscillator. The optimal dynamical entanglement goes beyond what is attainable by the scenario with two superimposed cavity drivings, as a result of the specially DPA-modulated quantum dynamics. Moreover, we calculate correlation spectra between the cavity and mechanical modes, and we find correspondence between the light-oscillator entanglement and the correlation spectra under the cooperative effect. The cooperation-enhanced optomechanical entanglement is robust against the thermal temperature, and is potentially useful for continuous variable quantum information processing.

Community:

  • [ 1 ] [Wu, Huaizhi]Fuzhou Univ, Fujian Key Lab Quantum Informat & Quantum Opt, Fuzhou 350116, Peoples R China
  • [ 2 ] [Wu, Huaizhi]Fuzhou Univ, Dept Phys, Fuzhou 350116, Peoples R China
  • [ 3 ] [Zheng, Shi-Biao]Fuzhou Univ, Fujian Key Lab Quantum Informat & Quantum Opt, Fuzhou 350116, Peoples R China
  • [ 4 ] [Zheng, Shi-Biao]Fuzhou Univ, Dept Phys, Fuzhou 350116, Peoples R China

Reprint 's Address:

  • 吴怀志 郑仕标

    [Wu, Huaizhi]Fuzhou Univ, Fujian Key Lab Quantum Informat & Quantum Opt, Fuzhou 350116, Peoples R China;;[Zheng, Shi-Biao]Fuzhou Univ, Fujian Key Lab Quantum Informat & Quantum Opt, Fuzhou 350116, Peoples R China

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Source :

PHYSICAL REVIEW A

ISSN: 2469-9926

Year: 2020

Issue: 3

Volume: 101

3 . 1 4

JCR@2020

2 . 6 0 0

JCR@2023

ESI Discipline: PHYSICS;

ESI HC Threshold:115

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 16

SCOPUS Cited Count: 17

30 Days PV: 2

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