免疫联合旋转噪声的鲁棒量子对话协议

Quantum Dialogue Agreement Immune Joint Rotation Noise Robust

噪声问题严重影响了量子对话在信息保真、信道容量和信息泄露方面的安全性。针对此问题,该文提出一种免疫联合旋转噪声的鲁棒量子对话协议。通过建立以团簇态为量子载体的,对联合旋转噪声免疫的逻辑量子态,构造相应的消相干自由子空间(DFS),再构建纠缠交换的量子隐秘信道。通过隐写在信息伪装、信息隐蔽、窃听检测等方面的优势,实现能抵抗旋转噪声的保真量子对话模型,保证秘密信息交换的准确性和安全性。通过比较得出,该文所提出的协议具有最高量子比特效率,且测量只需要单光子。

Noise is a serious challenge that militates against the security of quantum dialogue, quantum information fidelity, quantum channel capacity, and quantum information disclosure. In order to solve this problem, we propose a robust quantum dialogue protocol that is immune against joint rotation noise, establish a logical quantum state that is immune to the combined rotation noise in the cluster state which also serves as a quantum carrier, and then construct the corresponding decoherence free subspace （DFS）. With advantages of the entangled exchange of quantum cryptography, steganography, and eavesdropping detection, etc, a quantum fidelity dialogue model is realized which is resistant against rotational noise. This model therefore ensures the accuracy and security of the exchange of confidential information through a quantum channel. By comparison, the proposed protocol has the highest quantum bit efficiency, and the measurement requires only a single photon.