Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Opt Lett. 2012 Oct 1;37(19):4077-9. doi: 10.1364/OL.37.004077.
Quantum-optical coherence tomography (QOCT) combines the principles of classical OCT with the correlation properties of entangled photon pairs [Phys. Rev. A 65, 053817 (2002)]. The standard QOCT configuration is based on the Hong-Ou-Mandel interferometer, which uses entangled photons propagating in separate interferometer arms. This noncollinear configuration imposes practical limitations, e.g., misalignment due to drift and low signal-to-noise. Here, we introduce and implement QOCT based on collinear entangled photons. It makes use of a two-photon Michelson interferometer and offers several advantages, such as simplicity, robustness, and adaptability.
量子光学相干断层扫描（QOCT）将经典光学相干断层扫描的原理与纠缠光子对的相关性相结合[Phys. Rev. A 65, 053817 (2002)]。标准的 QOCT 配置基于 Hong-Ou-Mandel 干涉仪，它使用在单独的干涉臂中传播的纠缠光子。这种非共线配置带来了实际限制，例如由于漂移和低信噪比导致的失准。在这里，我们引入并实现了基于共线纠缠光子的 QOCT。它利用了双光子 Michelson 干涉仪，并具有简单、鲁棒和适应性强等优点。
