Practical quantum Byzantine protocol via nearly optimal entanglement resources

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 the n-players situation, since they require a lot of complicated entangled quantum resources, and more seriously,...