Almost Public Quantum Coins

arXiv:2002.12438v4 Announce Type: replace-cross
Abstract: In a quantum money scheme, a bank can issue money that users cannot counterfeit. Similar to bills of paper money, most quantum money schemes assign a unique serial number to each money state, thus potentially compromising the privacy of the users of quantum money. However in a quantum coins scheme, just like the traditional currency coin scheme, all the money states are exact copies of each other, providing a better level of privacy for the …

arxiv bank bills can counterfeit cs.cr issue money privacy public quant-ph quantum state