论文标题
使用线性光学器件饱和无噪声线性扩增的最大成功概率
Saturating the Maximum Success Probability Bound for Noiseless Linear Amplification using Linear Optics
论文作者
论文摘要
无噪声线性放大器（NLA）在量子物理规则下执行最高质量的放大。不幸的是，这些相同的规则通过无关定理对我们进行了共识，该定理将NLA操作限制为概率过程的领域。然而，它们对于多种量子协议很有用，许多提案都假设访问最佳的NLA设备，该设备具有最大可能的成功概率。在这里，我们提出了第一个线性光学NLA协议，该方案通过将Knill-Laflamme-Milburn接近确定性传送器修改为放大器，从而渐近地实现了这种成功概率。
A noiseless linear amplifier (NLA) performs the highest quality amplification allowable under the rules of quantum physics. Unfortunately, these same rules conspire against us via the no-cloning theorem, which constrains NLA operations to the domain of probabilistic processes. Nevertheless, they are useful for a wide variety of quantum protocols, with numerous proposals assuming access to an optimal NLA device which performs with the maximum possible success probability. Here we propose the first linear optics NLA protocol which asymptotically achieves this success probability bound, by modifying the Knill-Laflamme-Milburn near-deterministic teleporter into an amplifier.
