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We study the entanglement dynamics of the system comprising three two-level atoms resonantly interacting with three coupled cavities which are in weak coherent states initially. The atom-atom entanglement and cavity-cavity entanglement are investigated. The influences of coupling constant between cavities and intensity of the cavity field on entanglement properties are discussed. The results obtained using the numerical method show that atom-atom entanglement and cavity-cavity entanglement are both strengthened with the increase of intensity of the cavity field; on the other hand, atom-atom entanglement is weakened and the entanglement between cavity A and cavity B is strengthened with the increase of the coupling constant between cavities, and the entanglement between cavity B and cavity C has a nonlinear relation with the increase of the cavity-cavity coupling coefficient. These results are different from those in the case that cavity field is in vacuum state initially.
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Keywords:
- quantum optics /
- a weak coherent field /
- coupling cavities /
- quantum entanglement
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[6] Yang Z B 2007 Chin. Phys. 16 329
[7] Zheng S B, Yang C P, Nori F 2010 Phys. Rev. A 82 042327
[8] Peng P, Li F L 2007 Phys. Rev. A 75 062320
[9] Liao Q H, Fang G Y, Wang J C, Wang Y Y, Ahman M A, Liu S T 2011 Int. J. Theor. Phys. 50 2622
[10] Xiao X, Fang M F 2009 Chin. Phys. B 18 4695
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[13] Ogden C D, Irish E K, Kim M S 2008 Phys. Rev. A 78 063805
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[15] Zheng S B, Yang C P, Nori F 2010 Phys. Rev. A 82 042327
[16] Song J, Sun X D, Xia Y, Song H S 2011 Phys. Rev. A 83 052309
[17] Li W A 2010 Opt. Commun. 283 2978
[18] Liao C G, Yang Z B, Luo C L, Chen Z H 2011 Opt. Commun. 284 1920
[19] Zhang Y Q, Hu Z D, Xu J B 2011 Int. J. Theor. Phys. 50 2438
[20] Pellizzari T 1997 Phys. Rev. Lett. 79 5242
[21] Ciccarello F 2011 Phys. Rev. A 83 043802
[22] Zheng S B 2010 Chin. Phys. B 19 064204
[23] Li Y L, Fang M F 2009 Chin. Phys. B 20 050314
[24] Zhou Y L, Wang Y M, Liang L M, Li C Z 2009 Phys. Rev. A 79 044304
[25] Alexanian M 2011 Phys. Rev. A 83 023814
[26] Lu D M 2012 Acta Phys. Sin. 61 150303 [卢道明 2012 物理学报 61 150303]
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[1] Hagley E, Maitre X, Nogues G, Wunderlich C, Brune M, Raimond J M, Haroche S 1997 Phys. Rev. Lett. 79 1
[2] Osnaghi S, Bertet P, Auffeves A, Maioli P, Brune M, Raimond J M, Haroche S 2001 Phys. Rev. Lett. 87 037902
[3] Rauschenbeutel A, Nogues G, Osnaghi S, Bertet P, Brune M, Raimond J M, Haroche S 2000 Science 288 2024
[4] Rauschenbeutel A, Nogues G, Osnaghi S, Bertet P, Brune M, Raimond J M, Haroche S 1999 Phys. Rev. Lett. 83 5166
[5] Zheng S B, Guo G C 2000 Phys. Rev. Lett. 85 2392
[6] Yang Z B 2007 Chin. Phys. 16 329
[7] Zheng S B, Yang C P, Nori F 2010 Phys. Rev. A 82 042327
[8] Peng P, Li F L 2007 Phys. Rev. A 75 062320
[9] Liao Q H, Fang G Y, Wang J C, Wang Y Y, Ahman M A, Liu S T 2011 Int. J. Theor. Phys. 50 2622
[10] Xiao X, Fang M F 2009 Chin. Phys. B 18 4695
[11] Lu D M 2011 Acta Phys. Sin. 60 090302 [卢道明 2011 物理学报 60 090302]
[12] Yin Z Q, Li F L 2007 Phys. Rev. A 75 012324
[13] Ogden C D, Irish E K, Kim M S 2008 Phys. Rev. A 78 063805
[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] Song J, Sun X D, Xia Y, Song H S 2011 Phys. Rev. A 83 052309
[17] Li W A 2010 Opt. Commun. 283 2978
[18] Liao C G, Yang Z B, Luo C L, Chen Z H 2011 Opt. Commun. 284 1920
[19] Zhang Y Q, Hu Z D, Xu J B 2011 Int. J. Theor. Phys. 50 2438
[20] Pellizzari T 1997 Phys. Rev. Lett. 79 5242
[21] Ciccarello F 2011 Phys. Rev. A 83 043802
[22] Zheng S B 2010 Chin. Phys. B 19 064204
[23] Li Y L, Fang M F 2009 Chin. Phys. B 20 050314
[24] Zhou Y L, Wang Y M, Liang L M, Li C Z 2009 Phys. Rev. A 79 044304
[25] Alexanian M 2011 Phys. Rev. A 83 023814
[26] Lu D M 2012 Acta Phys. Sin. 61 150303 [卢道明 2012 物理学报 61 150303]
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