Einstein－Podolsky－Rosen entanglement in bad cavity case

doi:10.1088/1674-1056/19/7/074210

中国物理B ›› 2010, Vol. 19 ›› Issue (7): 74210-074210.doi: 10.1088/1674-1056/19/7/074210

Einstein－Podolsky－Rosen entanglement in bad cavity case

袁绥洪, 胡响明

Department of Physics, Huazhong Normal University, Wuhan 430079, China

修回日期:2010-01-13 出版日期:2010-07-15 发布日期:2010-07-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60778005).

Einstein－Podolsky－Rosen entanglement in bad cavity case

Yuan Sui-Hong(袁绥洪) and Hu Xiang-Ming(胡响明)^†ger

Department of Physics, Huazhong Normal University, Wuhan 430079, China

Revised:2010-01-13 Online:2010-07-15 Published:2010-07-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60778005).

摘要/Abstract

摘要： This paper explores continuous variable entanglement in four-wave mixing when the atomic relaxation time is comparable to and longer than the cavity relaxation time. In this case the atomic memory is included in the field correlations and the entanglement in the output fields can be significantly enhanced. Einstein—Podolsky—Rosen (EPR) entanglement is achievable even in the bad cavity limit. This shows the EPR entanglement generation without need of good cavity.

Abstract: This paper explores continuous variable entanglement in four-wave mixing when the atomic relaxation time is comparable to and longer than the cavity relaxation time. In this case the atomic memory is included in the field correlations and the entanglement in the output fields can be significantly enhanced. Einstein—Podolsky—Rosen (EPR) entanglement is achievable even in the bad cavity limit. This shows the EPR entanglement generation without need of good cavity.

Key words: atomic memory effect, EPR entanglement, four-wave mixing

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

42.50.Dv (Quantum state engineering and measurements) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)

袁绥洪, 胡响明. Einstein－Podolsky－Rosen entanglement in bad cavity case[J]. 中国物理B, 2010, 19(7): 74210-074210.

Yuan Sui-Hong(袁绥洪) and Hu Xiang-Ming(胡响明) . Einstein－Podolsky－Rosen entanglement in bad cavity case[J]. Chin. Phys. B, 2010, 19(7): 74210-074210.

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Einstein－Podolsky－Rosen entanglement in bad cavity case

Einstein－Podolsky－Rosen entanglement in bad cavity case

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