量子纠错码在噪声信道中的量子网络通信方案

发布时间：2018-11-12 14:22

【摘要】：提出在实际噪声情况下的小型量子网络直接通信网络模型,在通信之前所有量子网络节点共享多粒子的非最大纠缠态(W态)。发送节点将手中共享的W态的某个粒子作为控制比特、需要传输秘密信息的粒子作为目标比特,通过量子控制非门(CNOT)操作,将需要传输的秘密信息粒子和W态建立纠缠关系,之后通过实际量子信道发送出去;接收节点将手中共享态W态的粒子作为控制比特、接收到的秘密信息粒子作为目标比特,再次应用CNOT门操作从而获得含误码的秘密信息粒子,然后将秘密信息粒子中的检测粒子取出,检测通信过程中是否有窃听者(Eve),并将剩余的秘密信息应用奇偶校验矩阵纠正由于信道噪声引起的量子比特翻转错误。之后对方案的安全、吞吐效率、通信效率等进行了分析和讨论。
[Abstract]:In this paper, a direct communication network model for small quantum networks with real noise is proposed. Before communication, all nodes of quantum networks share the non-maximal entangled states (W states) of multiple particles. The sending node takes a particle in the W state shared in the hands as the control bit, the particle that needs to transmit secret information as the target bit, and controls the non-gate (CNOT) operation by quantum. The entanglement between the secret information particle and the W state is established, and then transmitted through the actual quantum channel. The receiving node takes the shared W state particle as the control bit and the received secret information particle as the target bit, and then uses the CNOT gate operation to obtain the secret information particle containing error code. Then the detection particles in the secret information particles are taken out, the eavesdropper (Eve), is detected in the communication process, and the remaining secret information is applied to the parity check matrix to correct the quantum bit flipping error caused by the channel noise. After that, the security, throughput efficiency and communication efficiency of the scheme are analyzed and discussed.
【作者单位】：解放军电子工程学院通信对抗系;
【基金】：国家自然科学基金(61571446) 安徽省自然科学基金(KY13C152)
【分类号】：O413;TN918

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