论文标题
比较有损通道上纠缠纠缠的技术的比较
Comparison of Techniques for Distillation of Entanglement over a Lossy Channel
论文作者
论文摘要
我们分析了文献中提出的三种量子通信协议，并比较了它们传达单轨纠缠的程度。我们使用特定的指标来实现输出状态纯度和成功的可能性，并包括不完美的光子源和检测成分。我们发现，分布式的无噪声线性扩增（NLA）协议，在爱丽丝和鲍勃（Alice）和鲍勃（Bob）末端的中继点位于鲍勃（Bob）末端的中途，在大多数条件下均优于NLA，除非距离很小或光子源组件非常好。
We analyze three quantum communication protocols that have been proposed in the literature, and compare how well they communicate single-rail entanglement. We use specific metrics for output state purity and probability of success and include the presence of imperfect photon source and detection components. We find that a distributed noiseless linear amplification (NLA) protocol with a relay point placed half-way between Alice and Bob outperforms NLA at Bob's end and a recently proposed purification protocol under most conditions, unless the distance is very small or the photon source component is very good.
