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	Quantum properties near the instability boundary in optomechanical system
	Fang, Han-Hao1,2; Deng, Zhi-Jiao1,2; Zhu, Zhigang3; Zhou, Yan-Li1,2
刊名	Chinese Physics B
	2022-02-01
卷号	31期号:3
关键词	Optomechanics Quantum entanglement Stability Boundary lines External disturbances Instability boundaries Mechanical Opto-mechanical systems Physical effects Quantum properties Sensing accuracy Transitional region
ISSN号	1674-1056
DOI	10.1088/1674-1056/ac40f7
英文摘要	The properties of the system near the instability boundary are very sensitive to external disturbances, which is important for amplifying some physical effects or improving the sensing accuracy. In this paper, the quantum properties near the instability boundary in a simple optomechanical system have been studied by numerical simulation. Calculations show that the transitional region connecting the Gaussian states and the ring states when crossing the boundary is sometimes different from the region centered on the boundary line, but it is more essential. The change of the mechanical Wigner function in the transitional region directly reflects its bifurcation behavior in classical dynamics. Besides, quantum properties, such as mechanical second-order coherence function and optomechanical entanglement, can be used to judge the corresponding bifurcation types and estimate the parameter width and position of the transitional region. The non-Gaussian transitional states exhibit strong entanglement robustness, and the transitional region as a boundary ribbon can be expected to replace the original classical instability boundary line in future applications. © 2022 Chinese Physical Society and IOP Publishing Ltd.
语种	英语
出版者	IOP Publishing Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157908]
专题	兰州理工大学
作者单位	1.Department of Physics, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha; 410073, China; 2.Interdisciplinary Center for Quantum Information, National University of Defense Technology, Changsha; 410073, China; 3.Department of Physics, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Fang, Han-Hao,Deng, Zhi-Jiao,Zhu, Zhigang,et al. Quantum properties near the instability boundary in optomechanical system[J]. Chinese Physics B,2022,31(3).
APA	Fang, Han-Hao,Deng, Zhi-Jiao,Zhu, Zhigang,&Zhou, Yan-Li.(2022).Quantum properties near the instability boundary in optomechanical system.Chinese Physics B,31(3).
MLA	Fang, Han-Hao,et al."Quantum properties near the instability boundary in optomechanical system".Chinese Physics B 31.3(2022).

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