论文标题
超越巧合：使用Hong-Ou-Mandel干涉法中的所有数据
Beyond coincidence: using all the data in Hong-Ou-Mandel interferometry
论文作者
论文摘要
Hong-ou-mandel效应提供了一种机制，可以通过测量在梁分离器下干扰两个光子的束速率来确定光子对的区分性。特别感兴趣的是时间上的区分性，可用于探测时间延迟。但是，光子探测器本身提供了一些时序信息，但是，分辨率可以使干涉技术的分辨率相形见war，这典型分析减少了对二进制事件的干扰，而忽略了检测器中的时间信息。通过对数量和时间分辨率的检测器进行建模，我们证明了比单独的巧合率或时间数据所能提供的更高的精度。此外，附加信息可以同时估计与校准参数一起估算时间延迟，从而开放了无校准协议的可能性，并接近量子Cramér-Rao结合的精度。
The Hong-Ou-Mandel effect provides a mechanism to determine the distinguishability of a photon pair by measuring the bunching rates of two photons interfering at a beam splitter. Of particular interest is the distinguishability in time, which can be used to probe a time delay. Photon detectors themselves give some timing information, however--while that resolution may dwarf that of an interferometric technique--typical analyses reduce the interference to a binary event, neglecting temporal information in the detector. By modelling detectors with number and temporal resolution we demonstrate a greater precision than coincidence rates or temporal data alone afford. Moreover, the additional information can allow simultaneous estimation of a time delay alongside calibration parameters, opening up the possibility of calibration-free protocols and approaching the precision of the quantum Cramér-Rao bound.
