论文标题
非常规颞激光模式的洪 - 摩曼德干扰
Hong-Ou-Mandel interference of unconventional temporal laser modes
论文作者
论文摘要
Hong-ou-mandel（HOM）效应在最著名的量子干扰现象中排名，对于量子技术中的许多应用至关重要。当将两个独立和难以区分的光子叠加在光束分离器上时，就会出现基本效果，这完全抑制了两个输出端口之间的巧合。然而，研究的时间要少得多，当时该场共享相干性（连续波激光器）或模式包膜属性（脉冲激光器）。在这种情况下，我们期望存在两个不同和并发的HOM干扰方案：连贯长度时间尺度上的传统HOM倾角，以及脉冲长度尺度上的结构化HOM干扰模式。我们开发了一个理论框架，描述了对具有任意时间波形的激光场的HOM干扰，并且仅在时间上部分重叠。我们通过快速的偏振调制和时间分辨的单光子检测能够快速解决这些结构化的HOM倾角，从而观察到连续波激光器的结构化HOM干扰。
The Hong-Ou-Mandel (HOM) effect ranks among the most notable quantum interference phenomena, and is central to many applications in quantum technologies. The fundamental effect appears when two independent and indistinguishable photons are superimposed on a beam splitter, which achieves a complete suppression of coincidences between the two output ports. Much less studied, however, is when the fields share coherence (continuous-wave lasers) or mode envelope properties (pulsed lasers). In this case, we expect the existence of two distinct and concurrent HOM interference regimes: the traditional HOM dip on the coherence length time scale, and a structured HOM interference pattern on the pulse length scale. We develop a theoretical framework that describes HOM interference for laser fields having arbitrary temporal waveforms and only partial overlap in time. We observe structured HOM interference from a continuous-wave laser via fast polarization modulation and time-resolved single photon detection fast enough to resolve these structured HOM dips.
