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Controlling the entanglement of mechanical oscillators in composite optomechanical system |
| Jun Zhang(张俊)1, Qing-Xia Mu(穆青霞)2, Wen-Zhao Zhang(张闻钊)3 |
1. School of Mathematics and Statistics, Guizhou University of Finance and Economics, Guiyang 550025, China;
2. Mathematics and Physics Department, North China Electric Power University, Beijing 102206, China;
3. Beijing Computational Science Research Center(CSRC), Beijing 100193, China |
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Abstract A controllable entanglement scheme of two mechanical oscillators is proposed in a composite optomechanical system. In the case of strong driving and high dissipation, the dynamics of the movable mirror of the optomechanical cavity is characterized by an effective frequency in the long-time evolution of the system. Considering the classical nonlinear effects in an optomechanical system, we investigate the relationship between the effective frequency of the movable mirror and the adjustable parameters of the cavity. It shows that the effective frequency of the movable mirror can be adjusted ranging from ωm (the resonance frequency of the coupling oscillator) to -ωm. Under the condition of experimental realization, we can generate and control steady-state entanglement between two oscillators by adjusting the effective frequency of the movable mirror and reducing the effective dissipation by selecting the parameter of the cavity driving laser appropriately. Our scheme provides a promising platform to control the steady-state behavior of solid-state qubits using classical manipulation, which is significant for quantum information processing and fundamental research.
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Received: 28 November 2017
Revised: 18 January 2018
Accepted manuscript online:
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PACS:
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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42.50.-p
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(Quantum optics)
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03.67.Bg
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(Entanglement production and manipulation)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11704026 and 11461016), the Fund from Guizhou University of Finance and Economics, China (Grant No. 2017XZD01), and the Guizhou Youth Science and Technology Talent Development Project (Grant Nos.[2016] 170 and[2017] 150). |
Corresponding Authors:
Wen-Zhao Zhang
E-mail: zhangwz@csrc.ac.cn
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Cite this article:
Jun Zhang(张俊), Qing-Xia Mu(穆青霞), Wen-Zhao Zhang(张闻钊) Controlling the entanglement of mechanical oscillators in composite optomechanical system 2018 Chin. Phys. B 27 040304
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