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Improving robotic navigation is critical for extending exploration range and enhancing operational efficiency. Vision-based navigation relying on traditional CCD or CMOS cameras faces major challenges when complex illumination conditions…

Robotics · Computer Science 2025-10-14 David Rodríguez-Martínez , C. J. Pérez del Pulgar

Silicon single-photon detectors (Si SPDs) play a crucial role in detecting single photons in the visible spectrum. For various applications, photon detection efficiency (PDE) is the most critical characteristic for effectively collecting…

Single photon avalanche diode (SPAD) arrays have proven themselves as serious candidates for time of flight positron emission tomography (PET). Discrete readout schemes mitigate the low-noise requirements of analog schemes and offer very…

Instrumentation and Detectors · Physics 2018-06-28 M. -A. Tétrault , É. Desaulniers Lamy , A. Boisvert , C. Thibaudeau , F. Dubois , R. Fontaine , J. -F. Pratte

Single photon avalanche diodes (SPADs) are starting to play a pivotal role in the development of photon-efficient, long-range LiDAR systems. However, due to non-linearities in their image formation model, a high photon flux (e.g., due to…

Computer Vision and Pattern Recognition · Computer Science 2019-04-30 Anant Gupta , Atul Ingle , Andreas Velten , Mohit Gupta

We derive the likelihood of a raw signal in a single photon avalanche diode (SPAD), given a fixed photon flux. The raw signal comprises timing of detection events, which are nonlinearly related to the flux. Moreover, they are naturally…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Lior Dvir , Nadav Torem , Yoav Y. Schechner

Single-photon detectors (SPDs) are the most sensitive instruments for light detection. In the near-infrared range, SPDs based on III-V compound semiconductor avalanche photodiodes have been extensively used during the past two decades for…

Quantum Physics · Physics 2015-05-13 Jun Zhang , Mark A. Itzler , Hugo Zbinden , Jian-Wei Pan

Single-photon detectors (SPDs) are widely used in applications requiring extremely weak light detection. In the near-infrared region, SPDs based on InGaAs/InP single-photon avalanche diodes (SPADs) are the primary candidates for practical…

Instrumentation and Detectors · Physics 2025-03-07 Chao Yu , Qi Xu , Jun Zhang

Single-photon detectors based on avalanche photodiodes (SPAD) are key elements of many modern highly sensitive optical systems. One of the bottlenecks of such detectors is a afterpulsing effect which limits a detection rate and requires an…

Quantum Physics · Physics 2018-05-23 M. A. Smirnov , N. S. Perminov , R. R. Nigmatullin , A. A. Talipov , S. A. Moiseev

Single-photon detectors (SPDs) play important roles in highly sensitive detection applications, such as fluorescence spectroscopy, remote sensing and ranging, deep space optical communications, elementary particle detection, and quantum…

Instrumentation and Detectors · Physics 2020-01-08 Meng Yang , Feihu Xu , Ji-Gang Ren , Juan Yin , Yang Li , Yuan Cao , Qi Shen , Hai-Lin Yong , Liang Zhang , Sheng-Kai Liao , Jian-Wei Pan , Cheng-Zhi Peng

Single-photon avalanche diodes (SPADs) are widely used today in time-resolved imaging applications. However, traditional architectures rely on time-to-digital converters (TDCs) and histogram-based processing, leading to significant data…

Image and Video Processing · Electrical Eng. & Systems 2025-11-10 Yang Lin , Claudio Bruschini , Edoardo Charbon

Single-photon avalanche diodes (SPADs) have emerged as a promising candidate for optical wireless communication (OWC) owing to their ultra-high sensitivity and singlephoton detection capability. However, under strong background radiation or…

Signal Processing · Electrical Eng. & Systems 2026-05-28 Chen Wang , Zhiyong Xu , Jingyuan Wang , Jianhua Li , Weifeng Mou , Huatao Zhu

InGaAs/InP single-photon avalanche diodes (SPADs) are widely used in practical applications requiring near-infrared photon counting such as quantum key distribution (QKD). Photon detection efficiency and dark count rate are the intrinsic…

Quantum Physics · Physics 2016-09-14 Jian Ma , Bing Bai , Liu-Jun Wang , Cun-Zhu Tong , Ge Jin , Jun Zhang , Jian-Wei Pan

Single-photon detectors are a pivotal component in photonic quantum technologies. A precise and comprehensive calibration of the intrinsic detection efficiency is of utmost importance to ensure the proper evaluation of the performance in…

We investigate the feasibility and performance of photon-number-resolved photodetection employing single-photon avalanche photodiodes (SPADs) with low dark counts. While the main idea, to split $n$ photons into $m$ detection modes with no…

Instrumentation and Detectors · Physics 2020-05-28 Rajveer Nehra , Chun-Hung Chang , Qianhuan Yu , Andreas Beling , Olivier Pfister

Single-photon avalanche diode (SPAD) arrays have transformed optical imaging by enabling photon-counting sensitivity, picosecond resolution, and high frame-rate operation. These capabilities, however, have remained confined to the visible…

Single-photon avalanche detectors (SPADs) have enabled various applications in emerging photonic quantum information technologies in recent years. However, despite many efforts to improve SPAD's performance, the design of SPADs remained…

Applied Physics · Physics 2025-02-27 Boyang Zhang , Zhe Li , Zhongju Wang , Yang Yu , Hark Hoe Tan , Chennupati Jagadish , Daoyi Dong , Lan Fu

Avalanche photo detection is commonly used in applications which require single photon sensitivity. We examine the limits of using avalanche photo diodes (APD) for characterising photon statistics at high data rates. To identify the regime…

Quantum Physics · Physics 2009-11-13 H. B. Coldenstrodt-Ronge , C. Silberhorn

We demonstrate an efficient and scalable compressive Raman parallelization scheme based on single-photon avalanche diode (SPAD) arrays to reach pixel dwell times of 23 $\mu$s, representing over 10$\times$ speed-up using the otherwise weak…

Instrumentation and Detectors · Physics 2023-01-20 Clémence Gentner , Samuel Burri , Edoardo Charbon , Claudio Bruschini , Hilton B. de Aguiar

In order to build a new concept of photomultiplier based on silicon technology, design and characterization of 5x5 arrays of a new generation of single photon avalanche diodes (SPAD) manufactured by ST-Microelectronics have been performed.…

Current count-rate models for single-photon avalanche diodes (SPADs) typically assume an instantaneous recovery of the quantum efficiency following dead-time, leading to a systematic overestimation of the effective detection efficiency for…

Quantum Physics · Physics 2025-07-15 Jan Krause , Nino Walenta