Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium

doi:10.1088/1674-1056/23/3/034203

中国物理B ›› 2014, Vol. 23 ›› Issue (3): 34203-034203.doi: 10.1088/1674-1056/23/3/034203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium

吴琴^{a b}, 张智明^a

a Laboratory of Nanophotonic Functional Materials and Devices (SIPSE), Laboratory of Quantum Information Technology, South China Normal University, Guangzhou 510006, China;
b School of Information Engineering, Guangdong Medical College, Dongguan 523808, China

收稿日期:2013-04-03 修回日期:2013-06-18 出版日期:2014-03-15 发布日期:2014-03-15
基金资助:
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. 60978009 and 61378012), the Science and Technology Project of Zhanjiang, China (Grant No. 2011C3103007), and the Science Research Project in Guangdong Medical College, China (Grant No. xk1120).

Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium

Wu Qin (吴琴)^{a b}, Zhang Zhi-Ming (张智明)^a

a Laboratory of Nanophotonic Functional Materials and Devices (SIPSE), Laboratory of Quantum Information Technology, South China Normal University, Guangzhou 510006, China;
b School of Information Engineering, Guangdong Medical College, Dongguan 523808, China

Received:2013-04-03 Revised:2013-06-18 Online:2014-03-15 Published:2014-03-15
Contact: Zhang Zhi-Ming E-mail:zmzhang@scnu.edu.cn
Supported by:
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. 60978009 and 61378012), the Science and Technology Project of Zhanjiang, China (Grant No. 2011C3103007), and the Science Research Project in Guangdong Medical College, China (Grant No. xk1120).

摘要/Abstract

摘要： In this paper, the entanglement dynamics of two two-level atoms trapped in coupled cavities with a Kerr medium is investigated. We find that the phenomena of entanglement sudden death (ESD) and entanglement sudden birth (ESB) appear during the evolution process. The influences of initial atomic states, Kerr medium, and cavity–cavity hopping rate on the atom–atom entanglement are discussed. The results obtained by the numerical method show that the atom–atom entanglement is strengthened and even prevented from ESD with increasing cavity–cavity hopping rate and Kerr nonlinearity.

关键词: entanglement sudden death, concurrence, coupled cavities, Kerr medium

Abstract: In this paper, the entanglement dynamics of two two-level atoms trapped in coupled cavities with a Kerr medium is investigated. We find that the phenomena of entanglement sudden death (ESD) and entanglement sudden birth (ESB) appear during the evolution process. The influences of initial atomic states, Kerr medium, and cavity–cavity hopping rate on the atom–atom entanglement are discussed. The results obtained by the numerical method show that the atom–atom entanglement is strengthened and even prevented from ESD with increasing cavity–cavity hopping rate and Kerr nonlinearity.

Key words: entanglement sudden death, concurrence, coupled cavities, Kerr medium

中图分类号: (Quantum optics)

42.50.-p

03.67.Bg (Entanglement production and manipulation)

吴琴, 张智明. Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium[J]. 中国物理B, 2014, 23(3): 34203-034203.

Wu Qin (吴琴), Zhang Zhi-Ming (张智明). Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium[J]. Chin. Phys. B, 2014, 23(3): 34203-034203.

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Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium

Entanglement of two two-level atoms trapped in coupled cavities with a Kerr medium

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