论文标题
基于重复代码的可验证的多方量子键分配协议
A verifiable multi-party quantum key distribution protocol based on repetitive codes
论文作者
论文摘要
本文首次设计了基于重复代码的多方量子密钥分配协议。首先，我们建立一个经典的（t，n）阈值协议，该协议可以验证参与者的身份，并根据此重复代码对经典密钥序列进行编码。然后，通过使用此（t，n）阈值协议的参数进行与此编码序列相对应的量子状态序列的统一转换。此外，我们为是否保留接收顺序的测量值，并从符合这两个阈值条件的测量值中提取经典的子键序列，得出两个阈值。该协议可以验证参与者的身份，抵抗内部和外部参与者的攻击，并且在测试窃听器时不需要诱饵状态粒子，这比类似的协议更有效，并且还可以节省量子资源。
A multi-party quantum key distribution protocol based on repetitive code is designed for the first time in this paper. First we establish a classical (t, n) threshold protocol which can authenticate the identity of the participants, and encode the classical key sequence in accordance with this repetitive code. Then unitary transformation of the quantum state sequence corresponding to this encoded sequence is carried out by using the parameters from this (t, n) threshold protocol. Furthermore, we derive two thresholds for whether or not reserving the measured values of the received sequence, and extract the classical subkey sequence from the measured values conforming to these two threshold conditions. This protocol can authenticate the identity of the participant, resist the attack from the internal and external participants, and do not need the decoy state particles when testing the eavesdropper, which is more efficient than the similar protocols, and also saves the quantum resources.
