A novel quantum anonymous ranking protocol

A novel index distribution protocol based on single-particle state is proposed in this paper. Compared with the existing index distribution scheme, this protocol is not limited by the dimension of the quantum system. Based on the proposed index distribution protocol, we also propose a new quantum anonymous ranking protocol. This protocol can complete multi-user and multi-data anonymous ranking tasks in low-dimensional quantum systems. Security analysis shows that eavesdroppers cannot secretly obtain user's private information without being discovered. In addition, we analyze and compare the protocol of this article with the existing anonymous ranking protocols. For different practical conditions, we give the general criteria of how to choose an appropriate anonymous ranking protocol.