基于零差测量的光学量子态的迭代剪裁
Iterative tailoring of optical quantum states with homodyne measurements
摘要：
由于自由空间光量子态可以传播很长的距离，因此它们是在量子信息技术协议中携带信息的良好候选者。然而，这些状态往往是复杂的生产和需要的协议，其成功概率迅速下降的平均光子数的增加。在这里，我们提出了一个新的协议的产生和增长的任意状态，基于一个接一个的简单态叠加$α| 0 > +β| 1 >$相干解释。由于该协议的性质，允许使用量子存储器，它可以优于现有的协议。
英文摘要：
As they can travel long distances, free space optical quantum states are good candidates for carrying information in quantum information technology protocols. These states, however, are often complex to produce and require protocols whose success probability drops quickly with an increase of the mean photon number. Here we propose a new protocol for the generation and growth of arbitrary states, based on one by one coherent adjunctions of the simple state superposition $α| 0 > +β| 1 >$. Due to the nature of the protocol, that allows for the use of quantum memories, it can outperform existing protocols.
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