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Entanglement of Coupled Optomechanical Systems Improved by Optical Parametric Amplifiers

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Abstract

A scheme to generate the stationary entanglement of two distant coupled optical cavities placed optical parametric amplifiers is proposed. We study how the optical parametric amplifiers can affect the entanglement behaviors of the movable mirrors and the cavity fields. With the existence of optical parametric amplifiers, we show that larger stationary entanglement of optical and mechanical modes can be obtained and the entanglement increases with the increasing parametric gain. Especially, the degree of entanglement between the two cavity fields is more pronouncedly enhanced. Moreover, for a fixed parametric gain, the entanglement of distant cavity optomechanical systems increases as the input laser power is increased.

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Acknowledgments

The project was supported by the NSF of China under Grant No. 11474044, Doctor (Master) Fund of Anhui University of Science and Technology.

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Authors and Affiliations

  1. School of Science, Anhui University of Science and Technology, Huainan, 232001, China

    Guixia Pan

  2. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, 116024, China

    Guixia Pan, Ruijie Xiao & Ling Zhou

  3. Department of Physics, School of Mathematics and Physics, Bohai University, Jinzhou, 121013, China

    Ruijie Xiao

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  1. Guixia Pan
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  2. Ruijie Xiao
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  3. Ling Zhou
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Correspondence to Guixia Pan.

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Pan, G., Xiao, R. & Zhou, L. Entanglement of Coupled Optomechanical Systems Improved by Optical Parametric Amplifiers. Int J Theor Phys 55, 3697–3705 (2016). https://doi.org/10.1007/s10773-016-2999-6

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  • DOI: https://doi.org/10.1007/s10773-016-2999-6

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