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发布时间：2019-03-13

论文类型：期刊论文

发表时间：2016-04-01

发表刊物：INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

收录刊物：SCIE

卷号：55

期号：4

页面范围：2097-2109

ISSN号：0020-7748

关键字：Quantum correlation criterion; Quantum chaos; Optomechanical system

摘要：Although many quantum correlation criteria have been proposed successively in recent years, it is still an open question how to observe these criteria with the non-Hermitian terms in themselves. We propose an indirect scheme in this paper to observe non-Hermitian criteria and to judge whether or not quantum correlation exists in the system even though the expectation value measurement of non-Hermitian operator is invalid in quantum mechanics system. Our idea is to establish a critical state of mesoscopic oscillator under mean-field approximation, and the oscillator state will take place transition when the quantum correlation destroys the mean-field approximation. The non-Hermitian measurement will replace the position measurement in this process and it can be seen as a non-destructive detection. We give an example to explain this idea in a designed mesoscopic optomechanical system.