  In this paper we propose a protocol of quantum communication to achieve
Byzantine agreement among multiple parties. The striking feature of our
proposal in comparison to the existing protocols is that we do not use
entanglement to achieve the agreement. There are two stages in our protocol. In
the first stage, a list of numbers that satisfies some special properties is
distributed to every participant by a group of semi-honest list distributors
via quantum secure communication. Then, in the second stage those participants
exchange some information to reach agreement.
