Quantum Photonic Microscope

量子光子显微镜是一个自治的单元，它可以研究光-物质耦合的量子材料和腔量子电动力学系统的量子光学现象，包括单量子点和原子薄晶体。它由一个低振动、无氦的低温恒温器组成，达到4K的基本低温温度来容纳样品。低温恒温器将允许在亚微米分辨率的自由空间中进行光学激发和检测。样品的光学激发由频率可调的锁模不插手激光系统来促进。由于我们的目标是研究光谱范围在680-1000 nm之间的共振波长的系统，该激光系统由一个泵浦激光器和一个钛蓝宝石振荡器组成。该系统由一台标准光谱仪和一套高灵敏度、低时间抖动的单光子探测器组成。样品中量子相干的特征过程将在低于100ps的尺度上进行研究，这需要具有时间抖动的单光子探测器，在整个感兴趣的光谱窗口中，时间抖动小于50ps。

The Quantum Photonic Microscope is an autonomous unit, which allows the investigation of quantum optical phenomena of light-matter coupled quantum materials and cavity quantum electrodynamic systems, including single quantum dots and atomically thin crystals. It consists of a low vibration, helium-free cryostat, reaching a base cryogenic-temperature of 4K to host the sample. The cryostat will allow for optical excitation and detection in free space with sub-micrometer resolution. Optical excitation of the samples is facilitated by a frequency tunable, mode-locked hands-off laser system. Since we target the investigation of systems with resonant wavelengths in the spectral range between 680–1000 nm, this laser system is composed of a pump laser, and a Titanium-Sapphire Oscillator. The system is complemented by a measurement unit, which is composed of a standard spectrograph, which is equipped with a high sensitivity Si CCD detector, and a set of high sensitivity, low time-jitter single-photon detectors. The characteristic processes of quantum coherence in the samples which will be investigated on the sub 100 ps scale, calling for single photon detectors with a time-jitter, which is smaller than 50 ps throughout the spectral window of interest.