中国物理B ›› 2017, Vol. 26 ›› Issue (6): 60303-060303.doi: 10.1088/1674-1056/26/6/060303
Cheng-qian Yi(伊程前), Zhen Yi(伊珍), Wen-ju Gu(谷文举)
收稿日期:
2016-12-19
修回日期:
2017-03-20
出版日期:
2017-06-05
发布日期:
2017-06-05
通讯作者:
Zhen Yi
E-mail:yizhen@yangtzeu.edu.cn
基金资助:
Cheng-qian Yi(伊程前), Zhen Yi(伊珍), Wen-ju Gu(谷文举)
Received:
2016-12-19
Revised:
2017-03-20
Online:
2017-06-05
Published:
2017-06-05
Contact:
Zhen Yi
E-mail:yizhen@yangtzeu.edu.cn
Supported by:
摘要: Einstein-Podolski-Rosen (EPR) entanglement state is achievable by combining two single-mode position and momentum squeezed states at a 50:50 beam-splitter (BS). We investigate the generation of the EPR entangled state of two vibrating membranes in a ring resonator, where clockwise (CW) and counter-clockwise (CCW) travelling-wave modes are driven by lasers and finite-bandwidth squeezed lights. Since the optomechanical coupling depends on the location of the membranes, CW and CCW can couple to the symmetric and antisymmetric combination of mechanical modes for a suitable arrangement, which corresponds to a 50:50 BS mixing. Moreover, by employing the red-detuned driving laser and tuning the central frequency of squeezing field blue detuned from the driving laser with a mechanical frequency, the squeezing property of squeezed light can be perfectly transferred to the mechanical motion in the weak coupling regime. Thus, the BS mixing modes can be position and momentum squeezed by feeding the appropriate squeezed lights respectively, and the EPR entangled mechanical state is obtained. Moreover, cavity-induced mechanical cooling can further suppress the influence of thermal noise on the entangled state.
中图分类号: (Entanglement and quantum nonlocality)
伊程前, 伊珍, 谷文举. Generating EPR-entangled mechanical state via feeding finite-bandwidth squeezed light[J]. 中国物理B, 2017, 26(6): 60303-060303.
Cheng-qian Yi(伊程前), Zhen Yi(伊珍), Wen-ju Gu(谷文举). Generating EPR-entangled mechanical state via feeding finite-bandwidth squeezed light[J]. Chin. Phys. B, 2017, 26(6): 60303-060303.
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