A quantum voting protocol using single-particle states

Abstract

Based on the single-particle states, we propose a novel quantum voting protocol which can select multiple winners from candidates. In this protocol, the voting intentions of voters can be expressed through unitary operation, the voter’s ID information is contained in the ballot, and each ballot is encrypted. In addition, legitimate vote can neither be forged by malicious attackers nor be denied by voters. Considering the influence of the number of candidates and voters on the preparation of quantum states, we propose corresponding grouping strategies, respectively, to reduce the level of d-level single-particle states and the number of quantum states. Security analysis shows that our proposed protocol can resist different types of malicious attacks.