Practical quantum Byzantine protocol via nearly optimal entanglement resources
Practical quantum Byzantine protocol via nearly optimal entanglement resources
复制标题
通过近乎最优的纠缠资源实现实用的量子拜占庭协议
DOI:
10.1007/s11128-019-2419-y
复制
发表时间:
2019-10-01
影响因子:
2.5
通讯作者:
Huang, Liusheng
中科院分区:
文献类型:
--
作者:
Xue, Lide;Chen, Bingren;Huang, Liusheng
The Byzantine General Problem is a well-known problem in distributed systems, Fitzi et al. (Phys Rev Lett 87(21):217901, 2001) and Gaertner et al. (Phys Rev Lett 100(7):070504, 2008) proposed slightly weaker 3-players Byzantine protocols using quantum entanglement, respectively. However, these protocols are difficult to be applied to then-players situation, since they require a lot of complicated entangled quantum resources, and more seriously, they all face the risk of being attacked. In this work, we present a more practical protocol than previous proposals, which can be applied to then-players containingttraitors () and only requires some very simple entangled states and a few digital signatures. Our protocol matches an incentives mechanism to achieve optimal efficiency: Only one round of execution andO(mn) message complexity are required, wheremis a minor parameter of the protocol. (In the worst case, the entire network requiresrounds andmessage complexity, yet the reward mechanism will prevent this situation.)