In this paper, a controlled quantum dialogue protocol is designed based on five-qubit entangled states. One five-qubit entangled state can be used to exchange one communicant’s two private bits with the other communicant’s two private bits under the control of an honest supervisor. Security analysis turns out that it can overcome the information leakage problem and can resist the active attacks from an outside attacker. The designed protocol only needs single-particle measurements and Bell state measurements, both of which can be realized with current technologies.

中文翻译：

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与五量子比特纠缠态的受控量子对话

本文设计了一种基于五量子比特纠缠态的受控量子对话协议。在诚实的监督者的控制下，一个五量子位纠缠状态可用于将一个通信者的两个私有位与另一个通信者的两个私有位交换。安全分析表明，它可以克服信息泄漏问题，可以抵抗外部攻击者的主动攻击。设计的协议只需要单粒子测量和贝尔状态测量，这两者都可以用当前技术实现。