论文标题
纤维兼容的光子进料前馈，99％的保真度
Fiber-compatible photonic feed-forward with 99% fidelity
论文作者
论文摘要
光子量子计算和建立量子互联网都需要基于光纤的测量和前馈，以便与现有基础架构兼容。在这里，我们提出了一种与纤维兼容的方案，用于测量和进料，其性能通过在电信波长下进行单光子极化状态的远程制备来基准测试。在一个光子上进行投影测量的结果确定性地控制了第二光子使用超快光学开关所采用的路径。通过在校正其他实验错误之后，通过将良好校准的{bulk}被动极化光学元件放置在路径中，我们达到了测量和进率的保真度（99.0 $ \ pm $ 1）％。我们的方法可用于光子量子实验，包括计算，通信和传送。
Both photonic quantum computation and the establishment of a quantum internet require fiber-based measurement and feed-forward in order to be compatible with existing infrastructure. Here we present a fiber-compatible scheme for measurement and feed-forward, whose performance is benchmarked by carrying out remote preparation of single-photon polarization states at telecom-wavelengths. The result of a projective measurement on one photon deterministically controls the path a second photon takes with ultrafast optical switches. By placing well-calibrated {bulk} passive polarization optics in the paths, we achieve a measurement and feed-forward fidelity of (99.0 $\pm$ 1)%, after correcting for other experimental errors. Our methods are useful for photonic quantum experiments including computing, communication, and teleportation.
