摘要
高度维的量钥匙分发(QKD ) 的新实现协议被讨论。用三个相互的不偏的底，我们在场 d 水平与轻横梁的空间模式利用轨道的尖动量的六状态的 QKD 协议。一个高能力的特征后来调音的协议表演用光子模式被编码为 d 水平 Hilbert 空间。为州的准备和测量的设备也被讨论。这个协议有高安全和分享的参考框架的排列不在发送者和接收装置之间被需要。
A new implementation of high-dimensional quantum key distribution （QKD） protocol is discussed. Using three mutual unbiased bases, we present a d？level six-state QKD protocol that exploits the orbital angular momentum with the spatial mode of the light beam. The protocol shows that the feature of a high capacity since keys are encoded using photon modes in d-level Hilbert space. The devices for state preparation and measurement are also discussed. This protocol has high security and the alignment of shared reference frames is not needed between sender and receiver.
基金
Supported by the National Basic Research Program of China under Grant Nos 2006CB921106 and 2010CB923202, the Fundamental Research Funds for the Central Universities No BUPT2009RC0710, the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No 20090005120008, and the National Natural Science Foundation of China under Grant No 10947151.
