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Generation of Steady-State Entanglement in Quadratically Coupled Optomechanical System Assisted by Two-Level Atoms

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Abstract

We propose a scheme for the realization of a hybrid, strongly entangled system formed of an atomic ensemble surrounded by a quadratically coupled optomechanical cavity with a vibrating mirror. We firstly investigate the steady-state bipartite entanglement between the movable mirror and the cavity mode with the help of an atomic media. It shows that the introduction of the atomic medium can greatly improve the entanglement between the movable mirror and the cavity mode. Secondly, steady-state tripartite entanglement including the movable mirror, the cavity and atom media are investigated. We find the robust tripartite entanglement persists in the present system.

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Acknowledgments

The project was supported by NSFC (Grants No.11164018 and 11305085) and Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region (Grants No. NJYT-13-B13), the Key Project of Chinese Ministry of Education under Grant No. 212028 and Youth academic backbone of inner university of science and technology special project (No. 2014QNGG04).

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Correspondence to Yong-Hong Ma.

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Ma, YH., Li, FZ., Han, XG. et al. Generation of Steady-State Entanglement in Quadratically Coupled Optomechanical System Assisted by Two-Level Atoms. Int J Theor Phys 55, 2386–2396 (2016). https://doi.org/10.1007/s10773-015-2876-8

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