论文标题
通过非平稳光学同源量子层造影的条件光谱法
Conditional Spectroscopy via Non-Stationary Optical Homodyne Quantum State Tomography
论文作者
论文摘要
连续变量量子层析成像是研究量子光学中光场特性的最强大技术之一。但是，到目前为止，对固定相参考的需求阻止了其他领域（例如半导体光谱法）的广泛使用。在这里，我们介绍了非平稳量子状态断层扫描，该量子层析成像将技术适应超快光谱的特殊要求。详细说明，我们以大约100 \，fs的时间分辨率访问光场的幅度和相位，而无需固定相参考。此外，我们展示了我们的技术如何使我们可以通过传统手段在实验上无法访问的随机动力学进行有条件研究，并通过监测子PS量表上热光场的随机动力学通过实验证明了功能。最后，我们讨论了与更标准的汉伯里棕色棕色光子相关实验的差异和相似性，这可能被认为是我们技术的离散可变类似物。
Continuous variable quantum state tomography is one of the most powerful techniques to study the properties of light fields in quantum optics. However, the need for a fixed phase reference has so far prevented widespread usage in other fields such as semiconductor spectroscopy. Here, we introduce non-stationary quantum state tomography, which adapts the technique to the special requirements of ultrafast spectroscopy. In detail, we gain access to the amplitude and phase of light fields with a temporal resolution of about 100\,fs without the need for a fixed phase reference. Further, we show how our technique allows us to perform conditional studies of stochastic dynamics that are inaccessible experimentally by conventional means, and demonstrate the capabilities experimentally by monitoring the stochastic dynamics of a thermal light field on the sub-ps scale. Finally, we discuss differences and similarities to more standard Hanbury Brown-Twiss photon correlation experiments, which may be considered as the discrete variable analogues of our technique.
