标题： 利用线性光学元件实现 traveling wave fields 中的量子信息分裂 显示英文标题

标题： Splitting of quantum information in traveling wave fields using only linear optical elements

摘要： 在本简短报告中，我们提出了一种在行波情况下分割量子信息的可行方案。 还提出了一个过于简化的方案，用于生成一类W态，该态对于完美的隐形传态和超密集编码非常有用。 该方案仅使用线性光学元件（如分束器和移相器），以及光子计数器和单光子源。 结果表明，即使考虑到探测器的低效率和分束器的光吸收，仍有可能以高保真度分割量子信息。 显示英文摘要

摘要： In this brief report we present a feasible scheme to split quantum information in the realm of traveling waves. An oversimplified scheme is also proposed for the generation of a class of W states useful for perfect teleportation and superdense coding. The scheme employs only linear optical elements as beam splitters and phase shifters, in addition to photon counters and one-photon sources. It is shown that splitting of quantum information with high fidelity is possible even including inefficiency of the detectors and photoabsorption of the beam splitters.