论文标题
量子互联网中噪声量表稳定性范围和纠缠率最大化的理论
Theory of Noise-Scaled Stability Bounds and Entanglement Rate Maximization in the Quantum Internet
论文作者
论文摘要
量子互联网的关键问题是量子中继器的稳定性的推导以及纠缠网络结构中纠缠率最大化的理论。量子中继器的稳定性需要将所有输入密度矩阵都可以用目标密度矩阵换成。量子中继器的强稳定性意味着稳定的纠缠与量子记忆中存储的密度矩阵的界限和延迟的界限。在这里，为量子互联网构思了噪声尺度稳定性分析和纠缠率最大化的理论框架。我们定义了纠缠交换集的术语，该术语模拟了用存储的密度矩阵的量子中继器的量子记忆状态。我们确定最佳的纠缠交换方法，该方法在不同的纠缠交换集中最大化量子中继器的纠缠率是本地内存和本地操作的噪声的函数。我们证明了不完整的纠缠交换集，完整的纠缠交换集和完美的纠缠交换集的稳定性属性。我们证明了不同的纠缠交换集和噪声水平的纠缠率。结果可以应用于实验量子互联网。
Crucial problems of the quantum Internet are the derivation of stability properties of quantum repeaters and theory of entanglement rate maximization in an entangled network structure. The stability property of a quantum repeater entails that all incoming density matrices can be swapped with a target density matrix. The strong stability of a quantum repeater implies stable entanglement swapping with the boundness of stored density matrices in the quantum memory and the boundness of delays. Here, a theoretical framework of noise-scaled stability analysis and entanglement rate maximization is conceived for the quantum Internet. We define the term of entanglement swapping set that models the status of quantum memory of a quantum repeater with the stored density matrices. We determine the optimal entanglement swapping method that maximizes the entanglement rate of the quantum repeaters at the different entanglement swapping sets as function of the noise of the local memory and local operations. We prove the stability properties for non-complete entanglement swapping sets, complete entanglement swapping sets and perfect entanglement swapping sets. We prove the entanglement rates for the different entanglement swapping sets and noise levels. The results can be applied to the experimental quantum Internet.
