标题： 量子发射体光致发光的宽带傅里叶变换光谱学具有亚纳秒时间分辨率 显示英文标题

标题： Broadband Fourier transform spectroscopy of quantum emitters photoluminescence with sub-nanosecond temporal resolution

摘要： 量子发射体在宽光谱范围和快速时间尺度上的发光光谱特性对于从生物物理学到量子技术的应用至关重要。 在此，我们展示了基于紧凑且稳定的双折射干涉仪（与低暗计数超导单光子探测器耦合）的时间域傅里叶变换光谱技术在量子发射体研究中的应用。 我们通过实验表明，该系统能够在近红外到电信波段的宽光谱范围内对量子发射体进行光谱分析，在这一范围内，基于光栅的光谱仪通常与InGaAs相机结合使用时会显得噪声大且效率低。 此外，我们还证明了单光子探测器的高时间分辨率（可达几十皮秒量级）能够实现亚纳秒时间尺度上自旋依赖的光谱变化监测。 显示英文摘要

摘要： The spectral characterization of quantum emitter luminescence over broad wavelength ranges and fast timescales is important for applications ranging from biophysics to quantum technologies. Here we present the application of time-domain Fourier transform spectroscopy, based on a compact and stable birefringent interferometer coupled to low-dark-count superconducting single-photon detectors, to the study of quantum emitters. We experimentally demonstrate that the system enables spectroscopy of quantum emitters over a broad wavelength interval from the near-infrared to the telecom range, where grating-based spectrometers coupled to InGaAs cameras are typically noisy and inefficient. We further show that the high temporal resolution of single-photon detectors, which can be on the order of tens of picoseconds, enables the monitoring of spin-dependent spectral changes on sub-nanosecond timescales.