论文标题
多个不信任银行产生的量子资金
Quantum Money Generated by Multiple Untrustworthy Banks
论文作者
论文摘要
虽然可以复制古典货币，但原则上不可能复制量子资金，只有在知道如何生成它的银行，这意味着只有银行才能制作精确的副本。并非所有可靠的银行（例如中央银行）都会签发量子资金，因此，不信任的银行在没有用户知识的情况下分发了伪造的或多本相同量子资金的副本。因此，我们提出了一种量子拼布货币计划，其中银行无法将精确的副本分发给用户。该计划涉及多家银行提供公钥量子货币作为碎片，并通过组合量子拼凑而产生量子拼布。银行可以在不完全信任其他银行的情况下使用量子拼凑而成。此外，非银行用户可以通过添加用于监视副本分布的协议来安全地使用量子拼布货币，而无需信任任何可能专注于自身利益的银行。
While classical money can be copied, it is impossible to copy quantum money in principle, with only the bank that issues it knowing how to generate it, meaning only the bank can make exact copies. Not all reliable banks, such as central banks, will issue quantum money, so there is the possibility that untrustworthy banks are distributing fake or multiple copies of the same quantum money without the users' knowledge. As such, we propose a quantum patchwork money scheme in which banks cannot distribute exact copies to users. This scheme involves multiple banks providing public-key quantum money as shards and generating quantum patchwork money by combining them. The banks can use the quantum patchwork money without completely trusting the other banks. In addition, nonbank users can use safely the quantum patchwork money without trusting any banks potentially focused on self-interest by adding a protocol for monitoring the distribution of copies.
