Quantum coherence transfer between an optical cavity and mechanical resonators

• Published in: Science China. Physics, mechanics & astronomy Vol. 62; no. 10; p. 100311
• Main Authors: Li, GuoYao, Nie, WenJie, Li, XiYun, Li, MingCui, Chen, AiXi, Lan, YueHeng
• Format: Journal Article
• Language: English
• Published: Beijing Science China Press 01.10.2019; Springer; Springer Nature B.V
• Subjects: Astronomy; Cavity resonators; Classical and Continuum Physics; Coherence; Couplings; Decay rate; Investigations; Lasers; Mechanical oscillators; Observations and Techniques; Oscillators; Phase transitions; Physics; Physics and Astronomy; Quantum phenomena; Systems stability; system stability; optomechanics; quantum coherence
• ISSN: 1674-7348; 1869-1927
• DOI: 10.1007/s11433-018-9413-4

This study highlights the theoretical investigation of quantum coherence in mechanical oscillators and its transfer between the cavity and mechanical modes of an optomechanical system comprising an optical cavity and two mechanical oscillators that, in this study, were simultaneously coupled to the optical cavity at different optomechanical coupling strengths. The quantum coherence transfer between the optical and mechanical modes is found to depend strongly on the relative magnitude of the two optomechanical couplings. The laser power, decay rates of the cavity and mechanical oscillators, environmental temperature, and frequency of the mechanical oscillator are observed to significantly influence the investigated quantum coherences. Moreover, quantum coherence generation in the optomechanical system is restricted by the system’s stability condition, which helps sustain high and stable quantum coherence in the optomechanical system.