论文标题
用量子纠缠的光子探测激发态动力学：与相干多维光谱的对应关系
Probing excited-state dynamics with quantum entangled photons: Correspondence to coherent multidimensional spectroscopy
论文作者
论文摘要
量子光是促进量子技术的关键资源。这样的技术旨在使用工程的光量子状态提高光学测量的精度。在这项研究中，我们研究了通过与单色激光通过参数下转换产生的频率键入宽带光子对的传播测量。可以观察到，在研究系统中，在纠缠时间足够短时调整纠缠的双子束之间的路径差，可以在时间上解决研究中的状态对状态动力学。非古典光子相关性可通过单色泵送进行时间分辨光谱。进一步证明，信号对应于沿抗二元线的光谱信息，例如二维傅立叶转换光子回声光谱。这种通信激发了我们预测，更精心设计的光子状态将扩大量子光谱法的可用性。
Quantum light is a key resource for promoting quantum technology. One such class of technology aims to improve the precision of optical measurements using engineered quantum states of light. In this study, we investigate transmission measurement of frequency-entangled broadband photon pairs generated via parametric down-conversion with a monochromatic laser. It is observed that state-to-state dynamics in the system under study are temporally resolved by adjusting the path difference between the entangled twin beams when the entanglement time is sufficiently short. The non-classical photon correlation enables time-resolved spectroscopy with monochromatic pumping. It is further demonstrated that the signal corresponds to the spectral information along anti-diagonal lines of, for example, two-dimensional Fourier-transformed photon echo spectra. This correspondence inspires us to anticipate that more elaborately engineered photon states would broaden the availability of quantum light spectroscopy.
