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Considering a system comprised of two-level atoms resonantly interacting with weak coherent states trapped in two distant cavities connected by an optical fiber initially, we study the entanglement properties of the atom-atom, the cavity-cavity and the atom-cavity. Then the influences of the ratio between fiber-cavity and atom-cavity coupling intensity, the intensity and the phase of the cavity field on the entanglement properties are investigated numerically. It is shown that the entanglements of the atom-atom, the cavity-cavity and the atom-cavity vary with time in the periodical or approximately periodical manner; the entanglement can be transferred from cavity-cavity to atom-atom reciprocally. Compared with the entanglements of atom-atom and cavity-cavity, the varying period of atom-cavity entanglement is short. The ratio of fiber-cavity coupling intensity to atom-cavity coupling intensity and the phase of cavity field affect the entanglement properties greatly. The great entanglement can be achieved by using a smaller ratio of coupling intensity between fiber-cavity and atom-cavity.
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Keywords:
- weak coherent field /
- cavities connected with optical fiber /
- coupling intensity /
- quantum entanglement
[1] Ekert A K 1991 Phys. Rev. Lett. 67 661
[2] Bennett C H, Brassard G, Crepeau C, Jozsa R, Peres A, Wootters W 1993 Phys. Rev. Lett. 70 1895
[3] Nielsen M A, Chuang I L 2000 Quantum Computation and Quantum Information (Cambridge: Cambridge University Press)
[4] Zhang Q, Zhang E Y, Tang C J 2002 Acta Phys. Sin. 51 1675 (in Chinese) [张权, 张尔扬, 唐朝京 2002 51 1675]
[5] Zhang Q, Zhang E Y 2002 Acta Phys. Sin. 51 1684 (in Chinese) [张权, 张尔扬 2002 51 1684]
[6] Ye L, Guo G C 2002 Chin. Phys. 11 996
[7] Ficek Z, Tanas R 2006 Phys. Rev. A 74 024304
[8] Vitali D, Gigan S, Ferreira A, Bohm H R, Tombesi P, Guerreiro A, Vedral V, Zeilinger A, Aspelmeyer M 2007 Phys. Rev. Lett. 98 030405
[9] Vaglica A, Vetri G 2007 Phys. Rev. A 75 062120
[10] Zhang D Y, Tang S Q, Xie L J, Zhan X G, Chen Y H, Gao F 2010 Chin. Phys. B 19 100313
[11] Wang Z J, Zhang K, Fan C Y 2010 Chin. Phys. B 19 110311
[12] Zhao L F, Lai B H, Mei F, Yu Y F, Feng X L, Zhang Z M 2010 Chin. Phys. B 19 094207
[13] Hagley E, Maitre X, Nogues G, Wunderlich C, Brune M, Raimond J M 1997 Phys. Rev. Lett. 79 1
[14] Rauschenbeutel A, Nogues G, Osnaghi S 2000 Science 288 2024
[15] Osnaghi S, Bertet P, Auffeves A, Maioli P, Brune M, Raimond J M, Haroche S 2001 Phys. Rev. Lett. 87 037902
[16] Zheng S B, Guo G C 2000 Phys. Rev. Lett. 85 2392
[17] Olaya-Castro A, Johnson N F, Quiroga L 2004 Phys. Rev. A 70 020301
[18] GaoY F, Feng J, Zhang G M 2006 J. At. Mo1. Phys. 23 887
[19] Tesser T E, Deutsch I H, Delgada A 2003 Phys. Rev. A 68 062316
[20] Wang C Z, Fang M F 2002 Acta Phys. Sin. 51 1989 (in Chinese) [王成志, 方卯发 2002 51 1989]
[21] Zhang Y J, Zhou Y, Xia Y J 2008 Acta Phys. Sin. 57 21 (in Chinese) [张英杰, 周 原, 夏云杰 2002 57 21]
[22] Serafini A, Mancini S, Bose S 2006 Phys. Rev. Lett. 96 010503
[23] Yin Z Q, Li F L 2007 Phys. Rev. A 75 012324
[24] Zheng S B 2009 Appl. Phys. Lett. 94 154101
[25] Ye S Y, Zhong Z R, Zheng S B 2008 Phys. Rev. A 77 014303
[26] Zhang B 2010 Opt. Commun. 283 196
[27] Xiao X, Fang M F 2009 Chin. Phys. B 18 4695
[28] Lu D M 2013 Acta Phys. Sin. 62 030302 (in Chinese) [卢道明 2013 62 030302]
[29] Pellizzari T 1997 Phys. Rev. Lett. 79 5242
[30] Li F L, Li X S, Lin D L, George T F 1990 Phys. Rev. A 41 2712
[31] Hill S, Wootters W K 1997 Phys. Rev. Lett. 78 5022
[32] Wootters W K 1998 Phys. Rev. Lett. 80 2245
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[1] Ekert A K 1991 Phys. Rev. Lett. 67 661
[2] Bennett C H, Brassard G, Crepeau C, Jozsa R, Peres A, Wootters W 1993 Phys. Rev. Lett. 70 1895
[3] Nielsen M A, Chuang I L 2000 Quantum Computation and Quantum Information (Cambridge: Cambridge University Press)
[4] Zhang Q, Zhang E Y, Tang C J 2002 Acta Phys. Sin. 51 1675 (in Chinese) [张权, 张尔扬, 唐朝京 2002 51 1675]
[5] Zhang Q, Zhang E Y 2002 Acta Phys. Sin. 51 1684 (in Chinese) [张权, 张尔扬 2002 51 1684]
[6] Ye L, Guo G C 2002 Chin. Phys. 11 996
[7] Ficek Z, Tanas R 2006 Phys. Rev. A 74 024304
[8] Vitali D, Gigan S, Ferreira A, Bohm H R, Tombesi P, Guerreiro A, Vedral V, Zeilinger A, Aspelmeyer M 2007 Phys. Rev. Lett. 98 030405
[9] Vaglica A, Vetri G 2007 Phys. Rev. A 75 062120
[10] Zhang D Y, Tang S Q, Xie L J, Zhan X G, Chen Y H, Gao F 2010 Chin. Phys. B 19 100313
[11] Wang Z J, Zhang K, Fan C Y 2010 Chin. Phys. B 19 110311
[12] Zhao L F, Lai B H, Mei F, Yu Y F, Feng X L, Zhang Z M 2010 Chin. Phys. B 19 094207
[13] Hagley E, Maitre X, Nogues G, Wunderlich C, Brune M, Raimond J M 1997 Phys. Rev. Lett. 79 1
[14] Rauschenbeutel A, Nogues G, Osnaghi S 2000 Science 288 2024
[15] Osnaghi S, Bertet P, Auffeves A, Maioli P, Brune M, Raimond J M, Haroche S 2001 Phys. Rev. Lett. 87 037902
[16] Zheng S B, Guo G C 2000 Phys. Rev. Lett. 85 2392
[17] Olaya-Castro A, Johnson N F, Quiroga L 2004 Phys. Rev. A 70 020301
[18] GaoY F, Feng J, Zhang G M 2006 J. At. Mo1. Phys. 23 887
[19] Tesser T E, Deutsch I H, Delgada A 2003 Phys. Rev. A 68 062316
[20] Wang C Z, Fang M F 2002 Acta Phys. Sin. 51 1989 (in Chinese) [王成志, 方卯发 2002 51 1989]
[21] Zhang Y J, Zhou Y, Xia Y J 2008 Acta Phys. Sin. 57 21 (in Chinese) [张英杰, 周 原, 夏云杰 2002 57 21]
[22] Serafini A, Mancini S, Bose S 2006 Phys. Rev. Lett. 96 010503
[23] Yin Z Q, Li F L 2007 Phys. Rev. A 75 012324
[24] Zheng S B 2009 Appl. Phys. Lett. 94 154101
[25] Ye S Y, Zhong Z R, Zheng S B 2008 Phys. Rev. A 77 014303
[26] Zhang B 2010 Opt. Commun. 283 196
[27] Xiao X, Fang M F 2009 Chin. Phys. B 18 4695
[28] Lu D M 2013 Acta Phys. Sin. 62 030302 (in Chinese) [卢道明 2013 62 030302]
[29] Pellizzari T 1997 Phys. Rev. Lett. 79 5242
[30] Li F L, Li X S, Lin D L, George T F 1990 Phys. Rev. A 41 2712
[31] Hill S, Wootters W K 1997 Phys. Rev. Lett. 78 5022
[32] Wootters W K 1998 Phys. Rev. Lett. 80 2245
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