期刊
FRONTIERS OF PHYSICS
卷 17, 期 1, 页码 -出版社
HIGHER EDUCATION PRESS
DOI: 10.1007/s11467-021-1097-2
关键词
optomechanical system; quantum entanglement; quantum memory
资金
- National Natural Science Foundation of China [11574041, 11375036]
- Excellent young and middle-aged Talents Project in scientific research of Hubei Provincial Department of Education [Q20202503]
The scheme proposed in this study suppresses laser phase noise and enhances the optomechanical coupling without increasing single-photon coupling strength. Parametric amplification terms restrain laser phase noise and strengthen optomechanical coupling. Introducing a broadband-squeezed vacuum environment inhibits the increase of thermal noise.
We propose a scheme to suppress the laser phase noise without increasing the optomechanical single-photon coupling strength. In the scheme, the parametric amplification terms, created by Kerr and Duffing nonlinearities, can restrain laser phase noise and strengthen the effective optomechanical coupling, respectively. Interestingly, decreasing laser phase noise leads to increasing thermal noise, which is inhibited by bringing in a broadband-squeezed vacuum environment. To reflect the superiority of the scheme, we simulate quantum memory and stationary optomechanical entanglement as examples, and the corresponding numerical results demonstrate that the laser phase noise is extremely suppressed. Our method can pave the way for studying other quantum phenomena.
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