J4 ›› 2012, Vol. 29 ›› Issue (5): 577-583.

• 量子光学 • 上一篇    下一篇

通过六比特最大纠缠态来分裂量子信息

涂修丽1,张婷1,王先明1,徐晶2   

  1. 1 新疆师范大学物理与电子工程学院, 新疆 乌鲁木齐 830054; 
    2 昌吉学院物理系,新疆 昌吉 831100
  • 收稿日期:2011-12-14 修回日期:2012-07-06 出版日期:2012-09-28 发布日期:2012-09-02
  • 通讯作者: 王先明(1958-),湖南衡山人,教授,主要研究量子光学、量子信息。 E-mail:wxj_wjq@sina.com
  • 作者简介:涂修丽(1988-),新疆乌鲁木齐人,硕士,主要研究量子通讯。E-mail:421121797@qq.com
  • 基金资助:

    National Natural Science Foundation of China (1086407) , Xinjiang Normal University Graduate Student Innovation Fund Projects, China(20121215), the Key Discipline of Theoretical Physics Graduate Student Innovation Fund of Xinjiang, China(LLWLY201111)

Splitting quantum information via six-qubit maximally entangled state

TU Xiu-li1, ZHANG Ting1, WANG Xian-ming1, XU Jing2   

  1. 1 College of physics and Electronic Engineering,Xinjiang Normal University, Urumchi 830054, China; 
    2 Department of Physics, Changji University,Changji 831100, China
  • Received:2011-12-14 Revised:2012-07-06 Published:2012-09-28 Online:2012-09-02

摘要:

量子信息分裂或量子态共享是经典秘密共享方案在量子方案中的概括。在量子信息分裂中,一种量子态的形式被划分并分发给多个接收者。提出一个通过使用六粒子的最大纠缠态作为量子通道来分裂两量子比特混态的方案。首先Alice执行两个bell基测量并且宣布测量结果,同时分配Charlie(Bob)来重建未知的初态。如果控制者Bob(Charlie)同意帮助Charlie(Bob)获得初态,他们就在各自的量子比特上执行单粒子测量。在发送者对粒子执行Bell基测量以及合作者对粒子执行单粒子测量之后,通过运用适当的幺正算符,接受者可以重建发送者信息的初始状态。

关键词: 量子信息, 分裂量子信息, 六-粒子最大纠缠态, Bell基测量, 纠缠交换, 么正变换

Abstract:

Quantum information splitting (QIS) or quantum state sharing is the generalization of classical secret sharing schemes to the quantum scenario. In QIS, a piece of quantum information (in the form of a quantum state) is divided and distributed to a number of receivers.Propose a schemes of splitting two-qubit states by using six -particle maximally entangled state as the quantum channel. Alice first performs two Bell-basis measurement and announces her measurement outcome and assigns Charlie (Bob) to reconstruct the original unknown state. If the controllers Bob (Charlie) agree to help Charlie (Bob) obtain the original state, they should perform single-particle measurements on their respective qubits. After the sender performs Bell-basis measurements on her particles, and the cooperators operate single-particle measurements on their particles, the state receiver can reconstruct the original state of the sender by applying the appropriate unitary operation.

Key words: quantum information, splitting quantum information, six -particle maximally entangled state, Bell-basis measurement, entanglement swapping, unitary operation

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