In this paper, we propose a protocol of quantum communication to achieve Byzantine agreement among multiple parties. Our protocol’s striking feature compared to the existing protocols is that we do not use entanglement to achieve the agreement. The role played by entangled states in other protocols is replaced in our protocol by a group of semi-honest list distributors. Such a replacement makes the implementation of our protocol more feasible. Moreover, our protocol is efficient in the sense that it achieves agreement in only three rounds which is a significant improvement with respect to the alternative agreement protocol not using entanglement. In the first round, a list of numbers that satisfies some special properties is distributed to every participant by list distributors via quantum secure communication. Then, in the second and third rounds, those participants exchange some information to reach an agreement.

中文翻译：

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无纠缠的多方量子拜占庭协议

在本文中，我们提出了一种量子通信协议来实现多方之间的拜占庭协议。与现有协议相比，我们的协议的显着特点是我们不使用纠缠来实现协议。纠缠状态在其他协议中扮演的角色在我们的协议中被一组半诚实的列表分发者取代。这样的替换使我们的协议的实现更加可行。此外，我们的协议是有效的，因为它仅在三轮中达成一致，这相对于不使用纠缠的替代一致协议是一个重大改进。在第一轮中，列表分发者通过量子安全通信向每个参与者分发满足某些特殊属性的数字列表。然后，在第二轮和第三轮，