摘要
提出了一种基于W态的量子确定性密钥分发方案,方案采用在量子信道中传输更加稳定的W态作为承载信息的粒子,利用量子相干特性以及一串公开的信息序列S作为密钥分发的关键,在兼顾传输粒子稳定性的前提下能够达到54.54%的密钥分发效率,与使用GHZ态相比,在效率相差无几的情况下保证粒子在传输过程中具有更强的鲁棒性。安全分析表明,此方案能经受窃听者采取的截获-转发(重发)攻击和纠缠攻击两种攻击方式,确保通信安全可靠。同时,该方案在执行过程中不涉及任何幺正操作,简单便捷。
A quantum deterministic key distribution（QDKD） protocol was proposed by using W states as a carrier which is suitable for quantum channel transmission. Under the precondition of photon stability~ using quantum correlations and a public string S as a key to key distribution, a high efficiency of 54.54% was reached just Mmost with GHZ states, and photons were transmitted with a stronger robustness. Security analysis results show that this protocol could resist two common attacks, ensure the communication safe and reliable. Meanwhile, this protocol doesn＇t involve any unitary operation. It＇s easy handling
出处
《量子电子学报》
CAS
CSCD
北大核心
2014年第6期734-739,共6页
Chinese Journal of Quantum Electronics
关键词
量子光学
量子确定性密钥分发
W态
分发效率
鲁棒性
quantum optics
quantum deterministic key distribution
W state
distribution efficiency
robustness
