中国物理B ›› 2015, Vol. 24 ›› Issue (10): 104208-104208.doi: 10.1088/1674-1056/24/10/104208

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Entanglements in a coupled cavity-array with one oscillating end-mirror

吴琴a b, 肖银a, 张智明a   

  1. a Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices (SIPSE), Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China;
    b School of Information Engineering, Guangdong Medical University, Dongguan 523808, China
  • 收稿日期:2015-03-06 修回日期:2015-04-21 出版日期:2015-10-05 发布日期:2015-10-05
  • 基金资助:
    Project supported by the Major Research Plan of the National Natural Science Foundation of China (Grant No. 91121023), the National Natural Science Foundation of China (Grant Nos. 61378012 and 60978009), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20124407110009), the National Basic Research Program of China (Grant Nos. 2011CBA00200 and 2013CB921804), and the Program for Changjiang Scholar and Innovative Research Team in Universities, China (Grant No. IRT1243).

Entanglements in a coupled cavity-array with one oscillating end-mirror

Wu Qin (吴琴)a b, Xiao Yin (肖银)a, Zhang Zhi-Ming (张智明)a   

  1. a Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices (SIPSE), Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China;
    b School of Information Engineering, Guangdong Medical University, Dongguan 523808, China
  • Received:2015-03-06 Revised:2015-04-21 Online:2015-10-05 Published:2015-10-05
  • Contact: Zhang Zhi-Ming E-mail:zmzhang@scnu.edu.cn
  • Supported by:
    Project supported by the Major Research Plan of the National Natural Science Foundation of China (Grant No. 91121023), the National Natural Science Foundation of China (Grant Nos. 61378012 and 60978009), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20124407110009), the National Basic Research Program of China (Grant Nos. 2011CBA00200 and 2013CB921804), and the Program for Changjiang Scholar and Innovative Research Team in Universities, China (Grant No. IRT1243).

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摘要： We theoretically investigate the entanglement properties in a hybrid system consisting of an optical cavity-array coupled to a mechanical resonator. We show that the steady state of the system presents bipartite continuous variable entanglement in an experimentally accessible parameter regime. The effects of the cavity-cavity coupling strength on the bipartite entanglements in the field-mirror subsystem and in the field-field subsystem are studied. We further find that the entanglement between the adjacent cavity and the movable mirror can be entirely transferred to the distant cavity and mirror by properly choosing the cavity detunings and the coupling strength in the two-cavity case. Surprisingly, such a remote macroscopic entanglement tends to be stable in the large coupling regime and persists for environment temperatures at above 25 K in the three-cavity case. Such optomechanical systems can be used for the realization of continuous variable quantum information interfaces and networks.

关键词: entanglement, coupled-cavity array, optomechanical system

Abstract: We theoretically investigate the entanglement properties in a hybrid system consisting of an optical cavity-array coupled to a mechanical resonator. We show that the steady state of the system presents bipartite continuous variable entanglement in an experimentally accessible parameter regime. The effects of the cavity-cavity coupling strength on the bipartite entanglements in the field-mirror subsystem and in the field-field subsystem are studied. We further find that the entanglement between the adjacent cavity and the movable mirror can be entirely transferred to the distant cavity and mirror by properly choosing the cavity detunings and the coupling strength in the two-cavity case. Surprisingly, such a remote macroscopic entanglement tends to be stable in the large coupling regime and persists for environment temperatures at above 25 K in the three-cavity case. Such optomechanical systems can be used for the realization of continuous variable quantum information interfaces and networks.

Key words: entanglement, coupled-cavity array, optomechanical system

中图分类号:  (Mechanical effects of light on material media, microstructures and particles)

  • 42.50.Wk
46.80.+j (Measurement methods and techniques in continuum mechanics of solids) 41.20.Cv (Electrostatics; Poisson and Laplace equations, boundary-value problems)