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The dynamical entanglement in a model of the field interacted with atoms in a nonlinear medium is studied in terms of concurrence and the reduced Neumann entropy for the generalized binomial state of the field and the ground state of atoms. It is shown that concurrence is dominantly-positively correlated with the reduced Neumann entropy. The entanglement under suitable condition is nearly unchanged for a long time. This is useful for quantum information processing.
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Keywords:
- generalized binomial state /
- concurrence /
- reduced Neumann entropy
[1] Wootters K W 1998 Phys. Rev. Lett. 80 2245
[2] Vidal G, Werner F R 2002 Phys. Rev. A 65 032314
[3] Sudheesh C, Lakshmibala S, Balakrishnan V 2006 J. Phys. B 39 3345
[4] Hou X W, Cheng C M 2009 Chin. Phys. B 18 2719
[5] Zhai L J, Zheng Y J, Ding S L 2012 Chin. Phys. B 21 070503
[6] Qi L N, Zhang S 2009 Acta. Phys. Sin. 58 4630 (in Chinese) [齐琳娜, 张寿 2009 物理学报 58 4630]
[7] Xia J P, Ren X Z, Cong H L, Wang X W, He S 2012 Acta. Phys. Sin. 61 014208 (in Chinese) [夏建平, 任学藻, 从红璐, 王旭文, 贺树 2012 物理学报 61 014208]
[8] Cui C C, Xie S Y, Yang Y P 2012 Acta. Phys. Sin. 61 124206 (in Chinese) [崔丛丛, 谢双媛, 羊亚平 2012 物理学报 61 124206]
[9] Chen K, Albeverio S, Fei S M 2005 Phys. Rev. Lett. 95 040504
[10] Franco R L, Compagno G, Messina A, Napoli A 2012 Phys. Lett. A 374 2235
[11] Chen K, Wu L A 2002 Phys. Lett. A 306 14
[12] Li Z J, Li J Q, Jin Y H, Nie Y H 2007 J. Phys. B 40 3401
[13] Hou X W, Chen J H, Wan M F, Ma Z Q 2008 Eur. Phys. J. D 49 37
[14] Hou X W, Wan M F, Ma Z Q 2009 Phys. Rev. A 79 022308
[15] Masanes L 2006 Phys. Rev. Lett. 96 150501
[16] Hou X W, Wan M F, Ma Z Q 2012 Eur. Phys. J. D 66 152
[17] Hou X W, Wan M F, Ma Z Q 2012 Chin. Phys. B 21 103301
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[1] Wootters K W 1998 Phys. Rev. Lett. 80 2245
[2] Vidal G, Werner F R 2002 Phys. Rev. A 65 032314
[3] Sudheesh C, Lakshmibala S, Balakrishnan V 2006 J. Phys. B 39 3345
[4] Hou X W, Cheng C M 2009 Chin. Phys. B 18 2719
[5] Zhai L J, Zheng Y J, Ding S L 2012 Chin. Phys. B 21 070503
[6] Qi L N, Zhang S 2009 Acta. Phys. Sin. 58 4630 (in Chinese) [齐琳娜, 张寿 2009 物理学报 58 4630]
[7] Xia J P, Ren X Z, Cong H L, Wang X W, He S 2012 Acta. Phys. Sin. 61 014208 (in Chinese) [夏建平, 任学藻, 从红璐, 王旭文, 贺树 2012 物理学报 61 014208]
[8] Cui C C, Xie S Y, Yang Y P 2012 Acta. Phys. Sin. 61 124206 (in Chinese) [崔丛丛, 谢双媛, 羊亚平 2012 物理学报 61 124206]
[9] Chen K, Albeverio S, Fei S M 2005 Phys. Rev. Lett. 95 040504
[10] Franco R L, Compagno G, Messina A, Napoli A 2012 Phys. Lett. A 374 2235
[11] Chen K, Wu L A 2002 Phys. Lett. A 306 14
[12] Li Z J, Li J Q, Jin Y H, Nie Y H 2007 J. Phys. B 40 3401
[13] Hou X W, Chen J H, Wan M F, Ma Z Q 2008 Eur. Phys. J. D 49 37
[14] Hou X W, Wan M F, Ma Z Q 2009 Phys. Rev. A 79 022308
[15] Masanes L 2006 Phys. Rev. Lett. 96 150501
[16] Hou X W, Wan M F, Ma Z Q 2012 Eur. Phys. J. D 66 152
[17] Hou X W, Wan M F, Ma Z Q 2012 Chin. Phys. B 21 103301
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