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根据腔量子电动力学(QED,quantum electrodynamics)原子的演化规律提出腔QED内新颖的量子隐写协议,其隐藏容量高达4bit。协议通过腔QED中任意两个Bell态纠缠交换,建立一个隐藏信道传送秘密信息。协议不需将多粒子量子纠缠态作为量子资源,也不涉及关于多粒子量子纠缠态的纠缠交换和量子测量。分析表明,本文协议能够抵抗截获-重发攻击、测量-重发攻击和纠缠-测量攻击,具有良好的安全性。
According to the evolution law of QED (quantum electrodynamics) atoms, a novel quantum steganography protocol in cavity QED is proposed. Its hidden capacity is up to 4 bits. The protocol entangles and exchanges any two Bell states in the cavity QED to establish a hidden channel to transmit the secret information. The protocol does not require multi-particle quantum entanglement as a quantum resource, nor does it involve entanglement exchange and quantum measurement of multipartite quantum entangled states. The analysis shows that this protocol has good security against interception - retransmission attacks, measurement - retransmission attacks and entanglement - measurement attacks.