论文标题
单光子干涉仪的低0.1度相锁定
Sub-0.1 degree phase locking of a single-photon interferometer
论文作者
论文摘要
我们报告了一个单光马切德的干涉仪在15小时内稳定在0.05度的相位精度上。为了锁定相位，我们采用与量子信号不同波长的辅助参考光。开发的相位锁定与可忽略不计的串扰和量子信号的任意阶段连续运行。此外，其性能与参考的强度波动无关。由于所介绍的方法可以在绝大多数量子干涉仪网络中使用，因此可以显着改善量子通信和量子计量学中的相敏感应用。
We report a single-photon Mach-Zehnder interferometer stabilized to a phase precision of 0.05 degrees over 15 hours. To lock the phase, we employ an auxiliary reference light at a different wavelength than the quantum signal. The developed phase locking operates continuously, with negligible crosstalk, and for an arbitrary phase of the quantum signal. Moreover, its performance is independent of intensity fluctuations of the reference. Since the presented method can be used in a vast majority of quantum interferometric networks it can significantly improve phase-sensitive applications in quantum communication and quantum metrology.
