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研究了分别含有一个原子的两个非局域的压缩库间初始通过纠缠光关联起来的体系的纠缠演化性质,讨论了该性质与原子初态等因素的关系和规律.结果表明:两个分离的一般压缩库间,两个原子间的纠缠度会随时间的演化出现纠缠死亡和恢复的现象.纠缠随时间的演化最终都会趋于一个稳定的值,而且是同一个值,同样与原子初态无关.
Abstract：Investigates the property of entanglement between a pair of two-level atoms placed in two apart squeezed reservoirs correlated by two-mode squeezed light.Studies the relation of the property to the qubits initial state.The result shows that the sudden death and revival of entanglement of the qubits always occurs between the apart squeezed reservoirs with the time evolution.Never-theless,each the entanglements of various initial state eventually maintains at a same stationry level,has no relationship with the initial state of atom.
[1]SCULIY M O,ZUBAIRY M S.Quantum optics[M].Cambridge:Cambridge University,1997.
[2]NIELSON M A.CHUANG I L.Quantum computation andquantum imformation[M].Cambridge:Cambridge Univer-sity,2000.
[3]BENNETT C H,BRASSARD G,CREPEAU C,et al.Teleporting an unknown quantum state via dual classicaland Einstein-Podolsky-Rosen channels[J].Phys Rev.Lett,1993,70:1895-1899.
[4]BENNETT C H,WIESNER S.Communication via one-and two-particle operators on Einstein-Podolsky-Rosenstates[J].Phys Rev Lett,1992,69:2881-2884.
[5]EKERT A K.Quantum cryptography based on Bell's the-orem[J].Phys Rev Lett,1991,67:661-663.
[6]BARENCO A,DEUTSCH D,EKERT A,et al.Conditionalquantum dynamics and logic gates[J].Phys RevLett,1983,74:4083-4086.
[7]PLENIO M B,HUELGA S F,BEIGE A,et al.Cavity-loss-induced generation of entangled atoms[J].Phys Rev A,1999,59:2468-2475.
[8]FICEK Z,TANAS R.Entangled states and collective non-classical effects in the two atom system[J].Phys Rep,2002,372:369-443.
[9]MALINOVSKY V S,I R SOLA.Quantum phase controlof entanglement[J].Phys Rev Lett,2004,93:190502-190505.
[10]SERAFINI A,MANCINI S,BOSE S.Distributed quan-tum computation via optical fibers[J].Phys Rev Lett,2006,96:010503-010506.
[11]YU T,EBERLY J H.Finite-time disentanglement via spon-taneous emission[J].Phys Rev Lett,2004,93:140404-140407.
[12]YU T,EBERLY J H.Quantum open system theory:bipar-tite aspects[J].Phys Rev Lett,2006,97:140403-140406.
[13]ALMEIDA M P,DE MELO F,HOR-MEYLL M,et al.Ex-perimental observation of environment-induced sudden de-ath of entanglement[J].Quantum Physics,2007,25:0701184-0701188.
[14]FICEK Z,TANAS R.Dark periods and revivals of enta-nglement in a two-qubit system[J].Phys Rev A,2006,74:024304-024307.
[15]BRIEGEL H J,DUR W,CIRAC J I,et al.Quantum repe-aters:the role of imperfect local operations in quantumcommunication[J].Phys Rev Lett,1998,81:5932-5935.
[16]IKRAM M,LI F L,M.ZUBAIRY S.Disentanglement ina two-qubit system subjected to dissipation environments[J].Phys Rev A,2007,75:062336-062344.
[17]MCKEEVER J,et al.State-insensitive cooling and trap-ping of single atoms in an optical cavity[J].Phys Rev Lett,2003,90,133602-133605.
[18]GEORGIADES N P,et al.Nonclassical excitation for atomsin a squeezed vacuum[J].Phys Rev Lett,1995,75:3426-3429.
基本信息:
DOI：
中图分类号:O431.2
引用信息:
[1]黄晖,周本元.双模压缩库场驱动下两个二能级原子的纠缠性质[J].江汉大学学报(自然科学版),2008,36(04):20-24.
基金信息: