标题： 傅里叶域量子光学相干断层扫描在快速断层量子成像中的演示 显示英文标题

标题： Demonstration of Fourier-domain Quantum Optical Coherence Tomography for a fast tomographic quantum imaging

摘要： 使用光谱相关的光子对而不是经典激光光，并使用符合检测代替光强检测，量子光学相干断层扫描（Q-OCT）在多个实验方面优于经典OCT。它在相同的光谱带宽下提供了两倍更好的轴向分辨率，并且不受二阶色散的影响，包括导致OCT图像轴向分辨率退化的群速度色散。Q-OCT已在时域配置中进行，其中二维图像的一行是通过在干涉仪的参考臂中轴向移动镜子并测量到达两个单光子灵敏探测器的光子符合率来获取的。尽管成功地产生了分辨率加倍和色散抵消的图像，但它仍然相对较慢，无法与经典方法竞争。在这里，我们实验演示了一种新颖的傅里叶域配置下的Q-OCT，该配置于2020年理论上提出，其中参考镜是固定的，获取了联合光谱。我们表明，这种配置比其时域配置允许更快的图像获取，为在OCT领域实现实用且具有竞争力的解决方案迈出了重要一步。讨论了新方法的局限性，并与时域方法和传统OCT的局限性进行了对比。 显示英文摘要

摘要： Using spectrally correlated photon pairs instead of classical laser light and coincidence detection instead of light intensity detection, Quantum Optical Coherence Tomography (Q-OCT) outperforms classical OCT in several experimental terms. It provides twice better axial resolution with the same spectral bandwidth and it is immune to even-order chromatic dispersion, including Group Velocity Dispersion responsible for the bulk of axial resolution degradation in the OCT images. Q-OCT has been performed in the time domain configuration, where one line of the two-dimensional image is acquired by axially translating the mirror in the interferometer's reference arm and measuring the coincidence rate of photons arriving at two single-photon-sensitive detectors. Although successful at producing resolution-doubled and dispersion-cancelled images, it is still relatively slow and cannot compete with its classical counterpart. Here, we experimentally demonstrate Q-OCT in a novel Fourier-domain configuration, theoretically proposed in 2020, where the reference mirror is fixed and the joint spectra are acquired. We show that such a configuration allows for faster image acquisition than its time-domain configuration, providing a step forward towards a practical and competitive solution in the OCT arena. The limitations of the novel approach are discussed, contrasted with the limitations of both the time-domain approach and the traditional OCT.