标题： 基于端口的隐形传态中的纠缠再利用 显示英文标题

标题： Entanglement recycling in port-based teleportation

摘要： 我们研究了一轮概率性基于端口的传输（PBT）后的纠缠资源态再利用问题。我们解析地刻画了其退化情况，并且针对资源态由 $N$ 个EPR对组成的情况，在 $N \to \infty$ 极限下展示了其在下一轮传输中被重用的可能性。对于优化后的资源态情况，我们将该协议的性能与多端口传输进行了比较，表明资源态确实可以被重用。在确定性方案的情况下也进行了类似的比较。 显示英文摘要

摘要： We study entangled resource state recycling after one round of probabilistic port-based teleportation. We analytically characterize its degradation and, for the case of the resource state consisting of $N$ EPR pairs, we demonstrate the possibility of reusing it for a subsequent round of teleportation in the $N \to \infty$ limit. For the case of an optimized resource state, we compare the protocol's performance to multi-port-based teleportation, indicating that the resource state reuse is possible. An analogous comparison is made in the case of the deterministic scheme.