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在场和非线性介质原子相互作用模型下, 利用concurrence和约化Neumann熵两种纠缠量度, 研究推广的二项式场态和原子基态的量子纠缠动力学. 结果表明concurrence与约化Neumann熵是正关联占优势; 在合适的条件下, 纠缠在较长时间内几乎是不变的. 这有利于量子信息过程.
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关键词:
- 推广的二项式态 /
- concurrence /
- 约化Neumann熵
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.-
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 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 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 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 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 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 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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