摘要We investigate the entanglement of pair cat states in the phase damping channel by adopting the log-negativity and then study the possible violations of Bell's inequalities for the pair cat states in terms of the Wigner representation in phase space based upon parity measurement and displacement operation.
Abstract：We investigate the entanglement of pair cat states in the phase damping channel by adopting the log-negativity and then study the possible violations of Bell's inequalities for the pair cat states in terms of the Wigner representation in phase space based upon parity measurement and displacement operation.
XU Hang-Shi;XU Jing-Bo. Quantum Nonlocality and Entanglement of Pair Cat States with Phase Decoherence[J]. 中国物理快报, 2008, 25(5): 1553-1556.
XU Hang-Shi, XU Jing-Bo. Quantum Nonlocality and Entanglement of Pair Cat States with Phase Decoherence. Chin. Phys. Lett., 2008, 25(5): 1553-1556.
[1]DiVincenzo D P 1995 Science 270 255 Grover L K 1997 Phys. Rev. Lett. 79 325 Nielsen M A and Chuang I L 2000 Quantum Computation andQuantum Information (Cambridge: Cambridge University) [2]Bennett C H, Brassard G and Mermin N D 1992 Phys. Rev.Lett. 68 557 Kempe J 1999 Phys. Rev. A 60 910 [3]Bennett C H, Brassard G, Crepeau C, Jozsa R, Peres A andWootters W K 1993 Phys. Rev. Lett. 70 1895 Bennett C H, Brassard G, Popescu S, Schumacher B, Smolin J Aand Wootters W K 1996 Phys. Rev. Lett. 76 722 Braunstein S L, D Ariano G M, Milburn G J and Sacchi M F2000 Phys. Rev. Lett. 84 3486 [4]Furusawa A, Sorensen J L, Braunstein S L, Fuchs C A, KimbleH J and Polzik E S 1998 Science 282 706 Braunstein S L and Kimble H J 1998 Phys. Rev. Lett. 80 869 [5]Hiroshima T 2001 Phys. Rev. A 63 022305 [6]Li S B, Wu R K, Wang Q M and Xu J B 2004 Phys. Lett.A 325 206 [7]Jeong H, Lee J and Kim M S 2000 Phys. Rev. A 61052101 Li S B and Xu J B 2004 J. Opt. B 6 373 [8]Agarwal G S and Biswas A 2005 J. Opt. B 7 350 Wu R K, Li S B, Wang Q M and Xu J B 2004 Mod. Phys.Lett. B 18 913 [9]Cochrane P T, Milburn G J and Munro W J 2000 Phys.Rev. A 62 062307 [10]Hillery M and Zubriy M S 2006 Phys. Rev. Lett. 96 050503 Li F L, Xiong H and Zubriy M S 2005 Phys. Rev. A 72 032107 [11]Gou S C, Steinbach J and Knight P L 1996 Phys. Rev.A 54 4315 [12]Banaszek K and W\'{odkiewicz K 1998 Phys. Rev. A 58 4345 [13]Banaszek K and W\'{odkiewicz K 1999 Phys. Rev.Lett. 82 2009 [14]Gerry C C and Grobe R 1995 Phys. Rev. A 511698 [15]Vidal G and Werner R F 2002 Phys. Rev. A 65032314 [16]Audenaert K, Plenio M B and Eisert J 2003 Phys. Rev.Lett. 90 027901 [17]Einstein A, Podolsky B and Rosen N 1935 Phys. Rev. 47 777 [18]Bell J S 1965 Physics (N.Y.) 1 195
2008, Vol. 25 
