Accessing photon bunching with photon number resolving multi-pixel detector

Resolving photon numbers using a superconducting tapered nanowire detector

Time- and number-resolved photon detection is crucial for photonic quantum information processing. Existing photon-number-resolving (PNR) detectors usually have limited timing and dark-count performance or require complex fabrication and operation. Here we demonstrate a PNR detector at telecommunication wavelengths based on a single superconducting nanowire with an integrated impedance-matching taper. The prototyping device was able to resolve up to five absorbed photons and had 16.1 ps timing jitter, <2 c.p.s. device dark count rate, $\sim$86 ns reset time, and 5.6% system detection efficienc…

光子数分辨量子储备池计算

Photon Number-Resolving Quantum Reservoir Computing

提出一种基于固定光学网络和光子数分辨探测的光子量子储备池计算方法，在降低输入态复杂度的同时访问高维Hilbert空间，可用现有技术实现并降低量子机器学习门槛。

光子识别器：散粒噪声极限附近的自适应量子光学传感

Photon discerner: Adaptive quantum optical sensing near the shot noise limit

提出一种基于自适应光子阈值的“光子识别”探测方法，无需记录精确光子数即可逼近散粒噪声极限，在量子DoLP相机和量子LiDAR等遥感应用中优于有限分辨率的光子数分辨探测器。

基于过渡边缘传感器信号的精确无监督光子计数

Accurate Unsupervised Photon Counting from Transition Edge Sensor Signals

本研究针对过渡边缘传感器（TES）的光子计数需求，对比多种信号分类方法，发现保留局部数据结构的非线性降维方法可实现更精准的无监督光子数分辨，还可用于异常信号剔除。