摘要
为了提高密钥分发效率,利用量子密集编码的原理设计了一种基于W态和Bell态纠缠的量子确定性密钥分发方案(Quantum deterministic key distribution,QDKD)。方案中,消息发送者Alice通过对持有粒子实施幺正操作实现确定性密钥的编码,接收方Bob利用粒子间联合测量获得确定性密钥。除去用于窃听检测的粒子,制备的粒子全部用于消息传输,每发送5个粒子可以实现5 bits确定性密钥的分发。最后,利用信息论方法对方案进行安全性分析,结果表明,方案是安全可靠的,能够及时发现任何窃听行为。
In order to improve the efficiency of key distribution,a quantum key distribution protocol based on W state and Bell state entanglement was proposed via quantum dense coding.In the scheme,the sender Alice codes the key successfully via local unitary operations,and the receiver Bob obtains the key with jointing measurement.All states can be used to transmit messages except those choosen for checking eavesdroppers,5 bits deterministic key were distributed by 5 particles.Security analysis result by using information theory shows that the scheme is secure,any eavesdroppers can be found in time.
出处
《量子电子学报》
CAS
CSCD
北大核心
2015年第2期178-185,共8页
Chinese Journal of Quantum Electronics
关键词
量子光学
量子确定性密钥分发
分发效率
密集编码
幺正操作
quantum optics
quantum deterministic key distribution
distribution efficiency
dense coding
unitary operation
作者简介
颛孙少帅(1990-),安徽人,研究生,主要从事量子密钥分发研究。E-mail:zhuansunss@sina.com
导师简介:陈红(1965-),女,安徽人,硕士,教授,研究方向为军事通信与通信对抗。E-mail:hplanhf@125.com