Phase-controlled asymmetric optomechanical entanglement against optical backscattering

Quantum entanglement plays a key role in both understanding the fundamental aspects of quantum physics and realizing various quantum devices for practical applications. Here we propose how to achieve a coherent switch of optomechanical entanglement in an optical whispering-gallery-mode resonator, by...

Full description

Saved in:
Bibliographic Details
Published in:Science China. Physics, mechanics & astronomy mechanics & astronomy, 2023-03, Vol.66 (3), p.230312, Article 230312
Main Authors: Liu, Jing-Xue, Jiao, Ya-Feng, Li, Ying, Xu, Xun-Wei, He, Qiong-Yi, Jing, Hui
Format: Article
Language:English
Subjects:
Astronomy
Asymmetry
Backscattering
Classical and Continuum Physics
Gravitational waves
Lasers
Light
Observations and Techniques
Physics
Physics and Astronomy
Quantum entanglement
Quantum physics
Quantum theory
Science
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Quantum entanglement plays a key role in both understanding the fundamental aspects of quantum physics and realizing various quantum devices for practical applications. Here we propose how to achieve a coherent switch of optomechanical entanglement in an optical whispering-gallery-mode resonator, by tuning the phase difference of the driving lasers. We find that the optomechanical entanglement and the associated two-mode quantum squeezing can be well tuned in a highly asymmetric way, providing an efficient way to protect and enhance quantum entanglement against optical backscattering, in comparison with conventional symmetric devices. Our findings shed a new light on improving the performance of various quantum devices in the practical noisy environment, which is crucial in such a wide range of applications as noise-tolerant quantum processing and the backscattering-immune quantum metrology.
ISSN:1674-7348
1869-1927
DOI:10.1007/s11433-022-2043-3