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研究了Kerr介质中两个耦合二能级原子的纠缠演化规律, 通过concurrence计算了系统的纠缠度, 讨论了系统初态、Kerr 介质和原子之间的偶极相互作用对腔中两个原子纠缠度的影响. 结果表明: 通过适当选取Kerr介质的耦合系数和偶极相互作用强度, 可以获得固定的两原子纠缠, 并且可以提高两原子之间的纠缠, 甚至彻底消除纠缠猝死现象.
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关键词:
- 偶极相互作用 /
- Kerr介质 /
- concurrence
[1] Kimin P, Seung W L, Hyunseok J 2012 Phys. Rev. A 86 062301
[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] Huang L Y, Fang M F 2010 Chin. Phys. B 19 090318
[10] Xu Y Y, Zhou F, Zhang X L, Feng M 2010 Chin. Phys. B 19 090317
[11] Yu T, Eberly J H 2004 Phys. Rev. Lett. 93 140404
[12] Almeida M P, de Melo F, Hor-Merll M, Salles A, Walborn S P, Ribeiro P H S, Davidovich L 2007 Science 316 579
[13] Laural J, Choi K S, Deng H, Chou C W, Kimble H J 2007 Phys. Rev. Lett. 99 180504
[14] Ficek Z, Tanas R 2006 Phys. Rev. A 74 024304
[15] Yönac M, Yu T, Eberly J H 2007 J. Phys. B 40 S45
[16] Shan C J, Liu J B, Chen T, Liu T K, Huang Y X, Li H 2010 Acta Phys. Sin. 59 6799 (in Chinese) [单传家, 刘继兵, 陈涛, 刘堂昆, 黄燕霞, 李宏 2010 物理学报 59 6799]
[17] 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 2010 物理学报 61 124206]
[18] 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]
[19] Zheng Q, Zhang X P, Ren Z Z 2008 Chin. Phys. B 17 3553
[20] Amitabh J, Puri R R 1992 Phys. Rev. A 45 5056
[21] Wootters K 1998 Phys. Rev. Lett. 80 2248
[22] Schmidt H, Imamoğlu A 1996 Opt. Lett. 21 1936
[23] Hau L V, Harris S E, Dutton Z, Behroozi C H 1999 Nature 397 594
[24] Lukin M D, Imamoğlu A 2001 Nature 413 273
[25] Munro W J, Nemoto K, Beausoleil R G, Spiller T P 2005 Phys. Rev. A 71 033819
-
[1] Kimin P, Seung W L, Hyunseok J 2012 Phys. Rev. A 86 062301
[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] Huang L Y, Fang M F 2010 Chin. Phys. B 19 090318
[10] Xu Y Y, Zhou F, Zhang X L, Feng M 2010 Chin. Phys. B 19 090317
[11] Yu T, Eberly J H 2004 Phys. Rev. Lett. 93 140404
[12] Almeida M P, de Melo F, Hor-Merll M, Salles A, Walborn S P, Ribeiro P H S, Davidovich L 2007 Science 316 579
[13] Laural J, Choi K S, Deng H, Chou C W, Kimble H J 2007 Phys. Rev. Lett. 99 180504
[14] Ficek Z, Tanas R 2006 Phys. Rev. A 74 024304
[15] Yönac M, Yu T, Eberly J H 2007 J. Phys. B 40 S45
[16] Shan C J, Liu J B, Chen T, Liu T K, Huang Y X, Li H 2010 Acta Phys. Sin. 59 6799 (in Chinese) [单传家, 刘继兵, 陈涛, 刘堂昆, 黄燕霞, 李宏 2010 物理学报 59 6799]
[17] 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 2010 物理学报 61 124206]
[18] 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]
[19] Zheng Q, Zhang X P, Ren Z Z 2008 Chin. Phys. B 17 3553
[20] Amitabh J, Puri R R 1992 Phys. Rev. A 45 5056
[21] Wootters K 1998 Phys. Rev. Lett. 80 2248
[22] Schmidt H, Imamoğlu A 1996 Opt. Lett. 21 1936
[23] Hau L V, Harris S E, Dutton Z, Behroozi C H 1999 Nature 397 594
[24] Lukin M D, Imamoğlu A 2001 Nature 413 273
[25] Munro W J, Nemoto K, Beausoleil R G, Spiller T P 2005 Phys. Rev. A 71 033819
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