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

doi:10.1088/1674-1056/24/10/104208

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.

Keywords: entanglement coupled-cavity array optomechanical system

Received: 06 March 2015
Revised: 21 April 2015
Accepted manuscript online:

PACS:	42.50.Wk	(Mechanical effects of light on material media, microstructures and particles)
	46.80.+j	(Measurement methods and techniques in continuum mechanics of solids)
	41.20.Cv	(Electrostatics; Poisson and Laplace equations, boundary-value problems)

Fund: 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).

Corresponding Authors: Zhang Zhi-Ming
E-mail: zmzhang@scnu.edu.cn

Cite this article:

Wu Qin (吴琴), Xiao Yin (肖银), Zhang Zhi-Ming (张智明) Entanglements in a coupled cavity-array with one oscillating end-mirror 2015 Chin. Phys. B 24 104208

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