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Indexed by:期刊论文

Date of Publication:2017-11-01

Journal:COMMUNICATIONS IN THEORETICAL PHYSICS

Included Journals:SCIE

Volume:68

Issue:5

Page Number:661-666

ISSN No.:0253-6102

Key Words:steady state correlations; quantum measurement; continuous variable systems

Abstract: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.