Intensity modulation as a preemptive measure against blinding of single-photon detectors based on self-differencing cancellation

3d Imaging Based on Single Photon Detectors

This paper introduces a mathematical model to evaluate fast and cost-effective 3D image sensors based on single photon detectors. The model will help engineers evaluate design parameters based on operating conditions and system performance. Ranging is based on the time-of-flight principle using TCSPC techniques. Two scenarios are discussed: (i) short-distance range indoors and (ii) medium-dista...

Avalanche Photodiodes As Single Photon Detectors

Fiber-Coupled Single-photon deteCtorS baSed on nbn SuperConduCting nanoStruCtureS

LLE Review, Volume 106 108 Practical quantum cryptography (QC) systems require ultrafast and high-quantum-efficiency (QE) single-photon detectors (SPD’s)1 with precise timing characteristics2 and sufficiently low dark counts. For fiber-optic QC systems, SPD’s working at the standard near-infrared (NIR) telecommunication wavelengths, namely 1.3 nm and/or 1.55 nm, with counting rates well above 1...

Single-photon detectors based on ultranarrow superconducting nanowires.

We report efficient single-photon detection (η = 20% at 1550 nm wavelength) with ultranarrow (20 and 30 nm wide) superconducting nanowires, which were shown to be more robust to constrictions and more responsive to 1550 nm wavelength photons than standard superconducting nanowire single-photon detectors, based on 90 nm wide nanowires. We also improved our understanding of the physics of superco...

Semiconductor optical single-photon detectors

Avalanche Photodiodes (APDs) connected with quenching circuits can be used for single photon detection. This semiconductor photon detector has a better performance than photomultiplier. The principles and applications of APDs are presented. Features, performance of different commercial devices are introduced and compared. Recent research progress based on the improvement of quenching circuits a...