论文标题
通过腔Qed进行量子私人比较
Quantum private comparison via cavity QED
论文作者
论文摘要
本文提出了通过空腔量子电动力学（QED）的第一个量子私人比较（QPC）方案，该方案是在本文中提出的，通过充分利用Atom通过腔QED的进化定律，在该法QED中，第三方（TP）可以独自表现出来，但不能与两个用户中的任何一个合谋。拟议的协议采用两种原子的产品状态，而不是纠缠状态作为初始量子资源，并且仅需要两个用户的单原子测量。对于拟议的协议，统一操作和量子纠缠交换操作都是必需的。所提出的协议可以将每个用户的平等比较与一个两种原子产品状态相比。提出的协议可以抵抗外部攻击和参与者攻击。特别是，它可以阻止TP了解两个用户的秘密。此外，该协议的量子效率高达50％。
The first quantum private comparison (QPC) protocol via cavity quantum electrodynamics (QED) is proposed in this paper by making full use of the evolution law of atom via cavity QED, where the third party (TP) is allowed to misbehave on his own but cannot conspire with either of the two users. The proposed protocol adopts two-atom product states rather than entangled states as the initial quantum resource, and only needs single-atom measurements for two users. Both the unitary operations and the quantum entanglement swapping operation are not necessary for the proposed protocol. The proposed protocol can compare the equality of one bit from each user in each round comparison with one two-atom product state. The proposed protocol can resist both the outside attack and the participant attack. Particularly, it can prevent TP from knowing two users' secrets. Furthermore, the qubit efficiency of the proposed protocol is as high as 50%.
