三个耦合腔系统中的纠缠特性

卢道明

doi:10.7498/aps.61.150303

摘要

本文研究将三个二能级原子分别囚禁在耦合腔A, B和C中, 腔中原子与腔场发生共振相互作用的情况. 采用Negativity熵度量两子系统间的纠缠, 通过数值计算给出了两个原子之间和两个腔场之间的纠缠演化. 讨论了腔场间的耦合强度对纠缠特性的影响. 研究结果表明: 原子间的纠缠与腔场间的耦合系数间存在非线性关系. 另一方面, 相邻腔场腔A和腔B间, 以及腔B和腔C间的纠缠随腔场间的耦合系数增大而减弱, 但非相邻腔场腔A和腔C间的纠缠却随腔场间的耦合系数增大而增强.

关键词:

Abstract

The entanglement dynamics of the system composed of three two-level atoms resonantly interacting with three coupled cavities is investigated in this paper. The influence of coupling constant between cavities on the entanglement between atoms and that between cavities are discussed. The results obtained using the numerical method show that the entanglement between atoms has a nonlinear relation with increase of the cavity-cavity coupling coefficient. On the other hand, the entanglement between cavity A and cavity B and the entanglement between cavity B and cavity C weaken with the increase of the coupling constant between cavities, but the entanglement between cavity A and cavity C strengthens with the increase of cavity-cavity coupling coefficient.

Keywords:

作者及机构信息

卢道明

1.
武夷学院电子工程系, 武夷山 354300

基金项目: 福建省自然科学基金(批准号: 2011J01018)资助的课题.

Authors and contacts

Lu Dao-Ming

1.
Department of Electronic Engineering, Wuyi University, Wuyishan 354300, China

Funds: Project supported by the Natural Science Foundation of Fujian Province (Grant No. 2011J01018).

参考文献

[1]	Zheng S B 2003 Phys. Rev. A 68 035801
[2]	Zuo X B, Pahlke K, Mathis W 2003 Phys. Rev. A 67 044301
[3]	Zhang Y J, Zhou Y, Xia Y J 2008 Acta. Phys. Sin. 57 21 (in Chinese) [张英杰, 周原, 夏云杰 2008 物理学报 57 21]
[4]	Wu C Fang M F 2010 Chin. Phys. B 19 020309
[5]	Lu D M 2011 Acta. Phys. Sin. 60 090302 (in Chinese) [卢道明 2011 物理学报 60 090302]
[6]	Zheng S B, Guo G C2000 Phys. Rev. Lett. 85 2392
[7]	Yang Z B 2007 Chin. Phys. 16 329
[8]	Zheng S B, Yang Z B, Xia Y 2010 Phys. Rev. A 81 015804
[9]	Yin Z Q, Li F L 2007 Phys. Rev. A 75 012324
[10]	Zhang B 2010 Optics Communications 283 196
[11]	Li Wen-An 2010 Optics Communications 283 2978
[12]	Ogden C D, Irish E K, Kim M S 2008 Phys. Rev. A 78 063805
[13]	Liao C G, Yang Z B, Luo C L 2011 Optics Communications 284 1920
[14]	Hartmann M J, Brandao F G S L, Plenio M B 2007 Phys. Rev. Lett. 99 160501
[15]	Zheng S B, Yang C P, Nori F 2010 Phys. Rev. A 82 042327
[16]	Zhang Y Q, Hu Z D, Xu J B 2011 Int. J. Theor. Phys. 50 2438
[17]	Pellizzari T 1997 Phys. Rev. Lett. 79 5242
[18]	Ye S Y, Zhong Z R, Zheng S B 2008 Phys. Rev. A 77 014303
[19]	Ciccarello F 2011 Phys. Rev. A 83 043802
[20]	Song J, Sun X D, Xia Y 2011 Phys. Rev. A 83 052309
[21]	Xiao X, Fang M F 2009 Chin. Phys. B 18 4695
[22]	Lu D M 2011 Acta. Phys. Sin. 60 120303 (in Chinese) [卢道明 2011 物理学报 60 120303]
[23]	Zou Y 2009 Chin. J. Quantum Eelectronics 26 69 (in Chinese) [邹艳 2009 量子电子学报 26 69]

施引文献

[1]	Zheng S B 2003 Phys. Rev. A 68 035801
[2]	Zuo X B, Pahlke K, Mathis W 2003 Phys. Rev. A 67 044301
[3]	Zhang Y J, Zhou Y, Xia Y J 2008 Acta. Phys. Sin. 57 21 (in Chinese) [张英杰, 周原, 夏云杰 2008 物理学报 57 21]
[4]	Wu C Fang M F 2010 Chin. Phys. B 19 020309
[5]	Lu D M 2011 Acta. Phys. Sin. 60 090302 (in Chinese) [卢道明 2011 物理学报 60 090302]
[6]	Zheng S B, Guo G C2000 Phys. Rev. Lett. 85 2392
[7]	Yang Z B 2007 Chin. Phys. 16 329
[8]	Zheng S B, Yang Z B, Xia Y 2010 Phys. Rev. A 81 015804
[9]	Yin Z Q, Li F L 2007 Phys. Rev. A 75 012324
[10]	Zhang B 2010 Optics Communications 283 196
[11]	Li Wen-An 2010 Optics Communications 283 2978
[12]	Ogden C D, Irish E K, Kim M S 2008 Phys. Rev. A 78 063805
[13]	Liao C G, Yang Z B, Luo C L 2011 Optics Communications 284 1920
[14]	Hartmann M J, Brandao F G S L, Plenio M B 2007 Phys. Rev. Lett. 99 160501
[15]	Zheng S B, Yang C P, Nori F 2010 Phys. Rev. A 82 042327
[16]	Zhang Y Q, Hu Z D, Xu J B 2011 Int. J. Theor. Phys. 50 2438
[17]	Pellizzari T 1997 Phys. Rev. Lett. 79 5242
[18]	Ye S Y, Zhong Z R, Zheng S B 2008 Phys. Rev. A 77 014303
[19]	Ciccarello F 2011 Phys. Rev. A 83 043802
[20]	Song J, Sun X D, Xia Y 2011 Phys. Rev. A 83 052309
[21]	Xiao X, Fang M F 2009 Chin. Phys. B 18 4695
[22]	Lu D M 2011 Acta. Phys. Sin. 60 120303 (in Chinese) [卢道明 2011 物理学报 60 120303]
[23]	Zou Y 2009 Chin. J. Quantum Eelectronics 26 69 (in Chinese) [邹艳 2009 量子电子学报 26 69]

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