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研究了初态为X态时Tavis-Cummings模型中具有偶极相互作用两原子的纠缠演化特性,在演化过程中,同时号码出现了两原子的纠缠突然死亡(ESD)与突然产生(ESB)两种有趣的现象.详细分析了两原子初始态的纯度、偶极相互作用、光场粒子数对这两种现象出现时间的影响,进一步给出了初始为混态时ESB与ESD的转换条件.计算结果表明,上述系统参量对两原子的纠缠演化、ESB与ESD有重要的影响,偶极相互作用会改变纠缠度的振荡周期, 使出现ESD的时间间隔减少,随着初始两原子纠缠纯度的增大,纠缠突然产
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关键词:
- 纠缠突然死亡与突然产生 /
- 两原子X态 /
- Tavis-Cummings模型
[1] Bennett C H , Brassaro G, Crepeau C, Jozsa R, Peres A, Wootters W K 1993 Phys. Rev. Lett. 70 1895
[2] He J, Ye L, Ni Z X 2008 Chin. Phys. B 17 1597
[3] Shan C J, Man Z X, Xia Y J, Liu T K 2007 Int. J. Quant. Inform. 5 335
[4] Ekert A K 1991 Phys. Rev . Lett . 67 661
[5] Zheng S B, Guo G C 2000 Phys. Rev. Lett. 85 2392
[6] Song J, Cao Z L 2005 Acta Phys. Sin. 54 696 (in Chinese) [宋 军、曹卓良 2005 物理学报 54 696]
[7] Loss D, Divincenzo D P 1998 Phys. Rev. A 57 120
[8] Wang X G 2001 Phys. Rev. A 64 012313
[9] Yu T, Eberly J H 2004 Phys. Rev. Lett. 93 140404
[10] Almeida M P, de Melo F, Hor-Meyll M, Salles A, Walborn S P, Ribeiro P H S, Davidovich L 2007 Science 316 579
[11] Laurat J, Choi K S, Deng H, Chou C W, Kimble H J 2007 Phys. Rev. Lett. 99 180504
[12] Ficek Z, Tanas R 2006 Phys. Rev. A 74 024304
[13] Lopez C E, Romero G, Lastra F, Solano E, Retamal J C 2008 Phys. Rev. Lett. 101 080503
[14] Yu T, Eberly J H 2007 Quantum Inf. Comput. 7 459
[15] Al-Qasimi A, James D F V 2008 Phys. Rev. A 77 012117
[16] Wang F Q, Zhang Z M, Liang R S 2008 Phys. Rev. A 78 062318
[17] Yonac M, Yu T, Eberly J H 2007 J. Phys. B: At. Mol. Opt. Phys. 40 S45
[18] Man Z X, Xia Y J, Nguyen B A 2008 J. Phys. B: At. Mol. Opt. Phys. 41 085503
[19] Chen L, Shao X Q, Zhang S 2009 Chin. Phys. B 18 888
[20] Shan C J, Xia Y J 2006 Acta Phys. Sin. 55 1585 (in Chinese)[单传家、夏云杰 2006 物理学报 55 1585]
[21] Wooters W K, Zurek W H 1982 Nature (London) 299 802
-
[1] Bennett C H , Brassaro G, Crepeau C, Jozsa R, Peres A, Wootters W K 1993 Phys. Rev. Lett. 70 1895
[2] He J, Ye L, Ni Z X 2008 Chin. Phys. B 17 1597
[3] Shan C J, Man Z X, Xia Y J, Liu T K 2007 Int. J. Quant. Inform. 5 335
[4] Ekert A K 1991 Phys. Rev . Lett . 67 661
[5] Zheng S B, Guo G C 2000 Phys. Rev. Lett. 85 2392
[6] Song J, Cao Z L 2005 Acta Phys. Sin. 54 696 (in Chinese) [宋 军、曹卓良 2005 物理学报 54 696]
[7] Loss D, Divincenzo D P 1998 Phys. Rev. A 57 120
[8] Wang X G 2001 Phys. Rev. A 64 012313
[9] Yu T, Eberly J H 2004 Phys. Rev. Lett. 93 140404
[10] Almeida M P, de Melo F, Hor-Meyll M, Salles A, Walborn S P, Ribeiro P H S, Davidovich L 2007 Science 316 579
[11] Laurat J, Choi K S, Deng H, Chou C W, Kimble H J 2007 Phys. Rev. Lett. 99 180504
[12] Ficek Z, Tanas R 2006 Phys. Rev. A 74 024304
[13] Lopez C E, Romero G, Lastra F, Solano E, Retamal J C 2008 Phys. Rev. Lett. 101 080503
[14] Yu T, Eberly J H 2007 Quantum Inf. Comput. 7 459
[15] Al-Qasimi A, James D F V 2008 Phys. Rev. A 77 012117
[16] Wang F Q, Zhang Z M, Liang R S 2008 Phys. Rev. A 78 062318
[17] Yonac M, Yu T, Eberly J H 2007 J. Phys. B: At. Mol. Opt. Phys. 40 S45
[18] Man Z X, Xia Y J, Nguyen B A 2008 J. Phys. B: At. Mol. Opt. Phys. 41 085503
[19] Chen L, Shao X Q, Zhang S 2009 Chin. Phys. B 18 888
[20] Shan C J, Xia Y J 2006 Acta Phys. Sin. 55 1585 (in Chinese)[单传家、夏云杰 2006 物理学报 55 1585]
[21] Wooters W K, Zurek W H 1982 Nature (London) 299 802
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