利用纠缠态实现任意N粒子量子态的秘密共享  

Quantum secret sharing of arbitrary N-qubit via entangled state

作　　者：吴君钦[1] 林慧英[1] 

机构地区：[1]江西理工大学信息工程学院,江西赣州341000

出　　处：《计算机应用》2015年第2期397-400,411,共5页journal of Computer Applications

基　　金：国家自然科学基金资助项目(11062002);江西省自然(青年)科学基金资助项目(2008GZS0030)

摘　　要：针对量子秘密共享的量子态局限于最大纠缠态的问题,提出一种实现任意N位量子态的秘密共享方案。该方案使用纠缠态作为量子信道,首先发送方对粒子进行Bell基测量,然后接收方Bob或Charlie使用单粒子测量,最后参与者根据Alice和单粒子测量得到的结果,选用合适的联合幺正变换对量子态进行相应的变换,这样可以实现任意N粒子量子态的秘密共享。该方案能够抵御外部窃听者和内部不诚实参与者的攻击,安全性分析表明此方案是安全的。Focused on the issue that the quantum secret sharing is limited to the maximally entangled state, a scheme for quantum state sharing of an arbitrary unknown N-qubit state by using entangled state as quantum channel was proposed. The sender Alice used the Bell basis measurement and then the receiver Bob or Charlie used the single particle measurement. The participants chose the right joint unitary operation according to the results from Alice and the signal measurement, which could realize arbitrary N-qubit secret sharing. The eavesdropping analysis shows explicitly that the scheme is secure and it can resist the external eavesdropper and internal dishonest participant.

关 键 词：量子光学 秘密共享 BELL基测量 单粒子测量 联合幺正变换 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]