Observation and Measures of Robust Correlations for Continuous Variable System
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发表时间：2019-03-11
论文类型：期刊论文
发表时间：2017-11-01
发表刊物：COMMUNICATIONS IN THEORETICAL PHYSICS
收录刊物：SCIE
卷号：68
期号：5
页面范围：661-666
ISSN号：0253-6102
关键字：steady state correlations; quantum measurement; continuous variable systems
摘要：In this work, we examine the robust continuous variable quantum correlation by analyzing two coupled optomechanical systems. Under the linearization approximation, the steady state correlation is quantified through correlation function of two non-Hermitian operators and we find that quantum correlation is always existence between two optical fields, two-oscillators and optical field-oscillator. Unlike the discrete variable system, we show quantum correlation in our model seems to be independent without any close transfer relationship. We further emphasize the influence of cavity-cavity coupling parameter on the amount of quantum correlations.
