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Decoherence of two initially entangled macroscopic fields each interacting with a loss environment is investigated; environment only have an effect on the leakage of field’s photons. The cavity-cavity entanglement is characterized by concurrence. The results obtained by resolvable values show a surprising result: the two entangled macroscopic fields become completely disentangled even though the leakage rate of the cavities fields is very tiny. Then we find that when the cavity entanglement disappears, the environment entanglement appears. Finally, we present an explanatory study of other entanglement partitions.
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Keywords:
- entangled coherent state /
- environment /
- entanglement sudden death /
- entanglement sudden birth
[1] Bennett C H, DiVincenzo D P 2000 Nature 404 247
[2] Dodd P J, Halliwell J J 2004 Phys. Rev. A 69 052105
[3] Zheng S B 2005 Phys. Rev. Lett. 95 080502
[4] Zheng S B, Guo G C 2006 Phys. Rev. A 73 032329
[5] Zheng S B 2010 Chin. Phys. B 19 044204
[6] Zyczkowski K, Horodecki P, Horodecki M, Horodecki R 2001 Phys. Rev. A 65 012101
[7] Yu T, Eberly J H 2003 Phys. Rev. B 68 165322
[8] Yu T, Eberly J H 2007 Quantum Information and Computation 7 459
[9] López C E, Romero G, Lastra F, Solano E, Retamal J C 2008 Phys. Rev. Lett. 101 080503
[10] Ficek Z, Tanaś R 2006 Phys. Rev. A 74 024304
[11] Dijkstra A G, Tanimura Y 2010 Phys. Rev. Lett. 104 250401
[12] Sainz I, Björk G 2007 Phys. Rev. A 76 042313
[13] Dr W, Briegel H J 2004 Phys. Rev. Lett. 92 155501
[14] Carvalho A R R, Mintert F, Buchleitner A 2004 Phys. Rev. Lett. 93 230501
[15] Man Z X, Xia Y J, Nguyen B A 2008 J. Phys. B: At. Mol. Opt. Phys. 41 155501
[16] Aolita L, Chaves R, Cavalcanti D, Acin A, Davidovich L 2008 Phys. Rev. Lett. 100 080501
[17] Gordon G, Kurizki G 2006 Phys. Rev. Lett. 97 110503
[18] Liao C G, Chen Z H, Luo C L 2010 Acta Phys. Sin. 59 8526 (in Chinese) [廖长庚, 陈子翃, 罗成立 2010 59 8526]
[19] Luo C L, Liao C G, Chen Z H 2010 Opt. Commun. 283 3168
[20] van Enk S J, Hirota O 2001 Phys. Rev. A 64 022313
[21] Wootters W K 1998 Phys. Rev. Lett. 80 2245
[22] Wang X G 2002 J. Phys. A: Math. Gen 35 165
[23] Liu C L, Zheng Y Z 2006 Acta Phys. Sin. 55 6222 (in Chinese) [刘传荣, 郑亦庄 2006 55 6222]
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[1] Bennett C H, DiVincenzo D P 2000 Nature 404 247
[2] Dodd P J, Halliwell J J 2004 Phys. Rev. A 69 052105
[3] Zheng S B 2005 Phys. Rev. Lett. 95 080502
[4] Zheng S B, Guo G C 2006 Phys. Rev. A 73 032329
[5] Zheng S B 2010 Chin. Phys. B 19 044204
[6] Zyczkowski K, Horodecki P, Horodecki M, Horodecki R 2001 Phys. Rev. A 65 012101
[7] Yu T, Eberly J H 2003 Phys. Rev. B 68 165322
[8] Yu T, Eberly J H 2007 Quantum Information and Computation 7 459
[9] López C E, Romero G, Lastra F, Solano E, Retamal J C 2008 Phys. Rev. Lett. 101 080503
[10] Ficek Z, Tanaś R 2006 Phys. Rev. A 74 024304
[11] Dijkstra A G, Tanimura Y 2010 Phys. Rev. Lett. 104 250401
[12] Sainz I, Björk G 2007 Phys. Rev. A 76 042313
[13] Dr W, Briegel H J 2004 Phys. Rev. Lett. 92 155501
[14] Carvalho A R R, Mintert F, Buchleitner A 2004 Phys. Rev. Lett. 93 230501
[15] Man Z X, Xia Y J, Nguyen B A 2008 J. Phys. B: At. Mol. Opt. Phys. 41 155501
[16] Aolita L, Chaves R, Cavalcanti D, Acin A, Davidovich L 2008 Phys. Rev. Lett. 100 080501
[17] Gordon G, Kurizki G 2006 Phys. Rev. Lett. 97 110503
[18] Liao C G, Chen Z H, Luo C L 2010 Acta Phys. Sin. 59 8526 (in Chinese) [廖长庚, 陈子翃, 罗成立 2010 59 8526]
[19] Luo C L, Liao C G, Chen Z H 2010 Opt. Commun. 283 3168
[20] van Enk S J, Hirota O 2001 Phys. Rev. A 64 022313
[21] Wootters W K 1998 Phys. Rev. Lett. 80 2245
[22] Wang X G 2002 J. Phys. A: Math. Gen 35 165
[23] Liu C L, Zheng Y Z 2006 Acta Phys. Sin. 55 6222 (in Chinese) [刘传荣, 郑亦庄 2006 55 6222]
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