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Geometrical quantum discord (GQD) is an effective measure of quantum correlation in quantum systems. We study GQD dynamics in an atom-cavity-fiber system. GQD between atoms and that between cavities are investigated. The influences of coupling constant between cavity and fiber and the intensity of the cavity field on GQD are discussed. Results show that GQD between atoms and that between cavities all display periodical evolutions, and their evolution frequencies increase with increasing coupling constant between cavity and fiber. On the other hand, the GQD between atoms and that between cavities are all strengthened with increasing intensity of the cavity field.
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Keywords:
- quantum optics /
- weak coherent field /
- atom-cavity-fiber compound system /
- quantum discord
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[10] Qian Y, Xu J B 2012 Chin. Phys. Lett. 29 040302
[11] Wang B, Xu Z Y, Chen Z Q, Feng M 2010 Phys. Rev. A 81 014101
[12] Luo S L, Fu S S 2010 Phys. Rev. A 82 034302
[13] He Z, Li L W 2013 Acta Phys. Sin. 62 180301 (in Chinese) [贺志, 李龙武 2013 62 180301]
[14] Jiang F J, Lu H J, Yan X H, Shi M J 2013 Chin. Phys. B 22 040303
[15] Wang L C, Shen J, Yi X X 2011 Chin. Phys. B 20 050306
[16] Sun Z Y, Li L, Yao K L, Du G H, Liu J W, Luo B, Li N, Li H N 2010 Phys. Rev. A 82 032310
[17] Sarandy M S 2009 Phys. Rev. A 80 022108
[18] Wang C, Chen Q H 2013 Chin. Phys. B 22 040304
[19] Xu P, Wang D, Ye L 2013 Chin. Phys. B 22 1000306
[20] Dakic B, Vedral V, Brukner C 2010 Phys. Rev. Lett. 105 190502
[21] Zhang B 2010 Opt. Commun. 283 196
[22] Lu D M 2011 Acta Phys. Sin. 60 090302 (in Chinese) [卢道明 2011 60 090302]
[23] Yang Z B, Xia Y, Zheng S B 2010 Opt. Commun. 283 3052
[24] Yin Z Q, Li F L 2007 Phys. Rev. A 75 012324
[25] Peng P, Li F L 2007 Phys. Rev. A. 75 062320
[26] Datta a, Shaji A, Caves C M 2008 Phys. Rev. Lett. 100 050502
[27] Lanyon B P, Barbreri M, Almeida M P, White A G 2008 Phys. Rev. Lett. 101 200501
[28] Groisman B, Popescu S, Winter A 2005 Phys. Rev. A 72 032317
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[1] Einstein A, Podolsky B, Rosen N 1935 Phys. Rev. 47 777
[2] Guo L, Liang X T 2009 Acta Phys. Sin. 58 50 (in Chinese) [郭亮, 梁先庭 2009 58 50]
[3] Zuo Z C, Xia Y J 2003 Acta Phys. Sin. 52 2687 (in Chinese) [左战春, 夏云杰 2003 52 2687]
[4] Lu D M 2013 Acta Optica Sinica 33 0127001 (in Chinese) [卢道明 2013 光学学报 33 0127001]
[5] Wootters W K 1998 Phys. Rev. Lett. 80 2245
[6] Wong A, Christensen N 2001 Phys. Rev. A 63 044301
[7] Wu C, Fang M F 2010 Chin. Phys. 19 020309
[8] Ollivier H, Zurek W H 2002 Phys. Rev. Lett. 88 017901
[9] Chen Q, Zhang C, Yu S, Yi X X, Oh C H 2011 Phys. Rev. A 84 042313
[10] Qian Y, Xu J B 2012 Chin. Phys. Lett. 29 040302
[11] Wang B, Xu Z Y, Chen Z Q, Feng M 2010 Phys. Rev. A 81 014101
[12] Luo S L, Fu S S 2010 Phys. Rev. A 82 034302
[13] He Z, Li L W 2013 Acta Phys. Sin. 62 180301 (in Chinese) [贺志, 李龙武 2013 62 180301]
[14] Jiang F J, Lu H J, Yan X H, Shi M J 2013 Chin. Phys. B 22 040303
[15] Wang L C, Shen J, Yi X X 2011 Chin. Phys. B 20 050306
[16] Sun Z Y, Li L, Yao K L, Du G H, Liu J W, Luo B, Li N, Li H N 2010 Phys. Rev. A 82 032310
[17] Sarandy M S 2009 Phys. Rev. A 80 022108
[18] Wang C, Chen Q H 2013 Chin. Phys. B 22 040304
[19] Xu P, Wang D, Ye L 2013 Chin. Phys. B 22 1000306
[20] Dakic B, Vedral V, Brukner C 2010 Phys. Rev. Lett. 105 190502
[21] Zhang B 2010 Opt. Commun. 283 196
[22] Lu D M 2011 Acta Phys. Sin. 60 090302 (in Chinese) [卢道明 2011 60 090302]
[23] Yang Z B, Xia Y, Zheng S B 2010 Opt. Commun. 283 3052
[24] Yin Z Q, Li F L 2007 Phys. Rev. A 75 012324
[25] Peng P, Li F L 2007 Phys. Rev. A. 75 062320
[26] Datta a, Shaji A, Caves C M 2008 Phys. Rev. Lett. 100 050502
[27] Lanyon B P, Barbreri M, Almeida M P, White A G 2008 Phys. Rev. Lett. 101 200501
[28] Groisman B, Popescu S, Winter A 2005 Phys. Rev. A 72 032317
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