Cavity-enhanced spontaneous parametric down-conversion with temporal filtering using integrated superconducting detectors (C07*)

在这个项目中，我们将研究低温条件下带有集成超导探测器的腔体中的参数下转换。通过使用超快驱动电子设备，我们将在时间域中实现泵滤波，只有在泵衰变后才启用集成探测器。先兆光子与腔体保持共振，因此可以被探测到。我们将研究在这一过程中产生的关联光子的光谱特性，以及优化低温条件下参数下转换的非线性行为。

In this project, we will study the parametric down-conversion in a cavity with integrated superconducting detectors under cryogenic conditions. By using ultrafast driving electronics, we will implement pump filtering in the time domain, by enabling the integrated detector only after the pump has decayed away. The herald photon remains resonant with the cavity, and can thus be detected. We will investigate the spectral properties of the correlated photons generated in this process, as well as optimise the nonlinear behaviour of parametric down-conversion under cryogenic conditions.