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耗散系统中实现原子态量子隐形传态的保真度

潘长宁 方见树 彭小芳 廖湘萍 方卯发

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耗散系统中实现原子态量子隐形传态的保真度

潘长宁, 方见树, 彭小芳, 廖湘萍, 方卯发

Fidelity of quantum teleportation of atomic-state in dissipative environment

Fang Mao-Fa, Peng Xiao-Fang, Liao Xiang-Ping, Pan Chang-Ning, Fang Jian-Shu
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  • 本文运用全量子理论并结合数值计算方法,研究了压缩真空库中利用原子纠缠态作为量子通道实现原子态量子隐形传态的保真度,讨论了被传送的原子初态形式以及压缩库的压缩参数r对保真度的影响.研究表明:当只有输入态受噪声影响,则被传送的初始态中基态概率越大的态,保真度越高;而当量子通道受影响时,则基态和激发态概率相等的原子叠加态传送的保真度最大.
    The atomic-state quantum teleportation in a dissipative environment is investigated by the quantum theory of damping - density operator approach and the numerical calculations. The effects of fidelity for different initial atomic-states are discussed. The results show that, when only the input atomic-state is exposed to the squeezed vacuum reservoirs, the fidelity of atomic-state with larger probability in the ground state is larger than that of other state; on the other hand, when the quantum channel is exposed to the reservoirs, the input state with equal probability in the ground state and the excited state has the largest fidelity in all the teleported states.
    • 基金项目: 湖南省教育厅项目(批准号:10C0616),湖南省自然科学基金(批准号:10JJ3088),湖南省教育厅重点项目(批准号:08A015)和湖南省教育厅重点项目(批准号:10A026)资助的课题
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    Furusawa A, Sorensen J L, Braunstein S L 1998 Science 282 706

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  • [1]

    Bennett C H, Brassard G 1993 Phys. Rev. Lett. 70 1895

    [2]

    Ye L, Guo G C 2004 Phys. Rev. A 70 054303

    [3]

    Feng M et al 2003 Phys. Rev. A 67 014306

    [4]

    Manzoor Ikram, Li F L, Zubairy M S 2007 Phys. Rev. A 75 062336

    [5]

    Zhang Q, Li F L, Li H R 2006 Acta Phys. Sin. 55 2275 (in Chinese) [张 茜、李福利、李宏荣 2006 物理学报 55 2275]

    [6]

    Wu Y, Payne M G, Hagley E W, Deng L 2004 Phys. Rev. A 69 063803 Wu Y, Deng L 2004 Opt. Lett. 29 1144

    [7]

    Zheng Y Z, Dai L Y, Guo G C 2003 Acta Phys. Sin. 52 2678 (in Chinese)[郑亦庄、戴玲玉、郭光灿 2003 物理学报 52 2678]

    [8]

    Zhai Z H, Li Y M, Wang S K, Guo J, Zhang T C, Gao J R 2005 Acta Phys. Sin. 54 2710 (in Chinese)[翟泽辉、李永明、王少凯、郭 娟、张天才、郜江瑞 2005 物理学报 54 2710]

    [9]

    Pan C N, Fang M F 2008 Chin. Phys. B 17 34

    [10]

    Ji X, Li K, Zhang S 2006 Chin. Phys. 15 478

    [11]

    Xia Y J, Wang G H, Du S J 2007 Acta Phys. Sin. 56 4331 (in Chinese)[夏云杰、王光辉、杜少将 2007 物理学报 56 4331]

    [12]

    Vaidman L 1994 Phys. Rev. A 49 1473

    [13]

    Braunstein S L, Kimble H J 1998 Phys. Rev. Lett. 80 869

    [14]

    Solano E, Cesar C L 2001 Phys. J. D 13 121

    [15]

    Lee H W and Kim J 2000 Phys. Rev. A 63 012305

    [16]

    Lee H W 2001 Phys. Rev. A 64 014302

    [17]

    Moussa M H Y 1997 Phys. Rev. A 55 R3287

    [18]

    Bouwmeester D, Pan J W, Mattle K, Eibl M, Weinfurters H, Zeilinger A 1997 Nature 390 575

    [19]

    Furusawa A, Sorensen J L, Braunstein S L 1998 Science 282 706

    [20]

    Nielsen M A, Chuang I L 2000 Quantum Computation and Quantum Information (Cambridge: Cambridge University Press).

    [21]

    Oh S, Lee S, Lee H W 2002 Phys. Rev. A 66 022316

    [22]

    Scully M O, Zubairy M S 1997 Quantum Optics ( Cambridge University Press)

    [23]

    Massar S, Popescu S 1995 Phys. Rev. Lett. 74 1259

计量
  • 文章访问数:  7885
  • PDF下载量:  791
  • 被引次数: 0
出版历程
  • 收稿日期:  2010-11-09
  • 修回日期:  2010-11-15
  • 刊出日期:  2011-09-15

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