Quantum Voting Scheme Based on Conjugate Coding
Tatsuaki Okamoto, Koutarou Suzuki, Yuuki Tokunaga · NTT technical review · 2008
We describe a quantum voting scheme in which a ballot is an unknown quantum state for a voter.Such a ballot is hard to forge because it is difficult in principle to make a copy of an unknown quantum state.Moreover, our quantum voting scheme guarantees anonymity because the ballot can be randomized by voters.We also describe a distributed variant of our scheme that is robust against a dishonest administrator.This scheme should remain usable in the coming era of quantum computers, which are expected to break most existing cryptographic schemes.