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Phase-controlled asymmetric optomechanical entanglement against optical backscattering 被引量:1
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作者 jing-xue liu Ya-Feng Jiao +3 位作者 Ying Li Xun-Wei Xu Qiong-Yi He Hui Jing 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2023年第3期66-75,共10页
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... 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. 展开更多
关键词 quantum entanglement optical backscattering OPTOMECHANICS
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