The use of a physical guard ring in CMOS single-photon avalanche diodes (SPADs) based on n + /(deep)p-well and p /(deep)n-well structures is common solution to control the electric field SPADs periphery prevent premature lateral breakdown. However, this leads decrease detection efficiency, i.e., fill-factor, especially when size reduced. Our paper presents an experimental simulation study repla...

A common type of weak-value experiment prepares a single particle in one state, weakly measures the occupation number another and post-selects on finding third state (a 'click'). Most experiments have been done with photons, but heralded preparation photon is difficult slow rate. Here we show that weak value mentioned above can be measured using strong (many-photon) coherent states, while still...

Abstract Numerical simulation of the electric field distribution and photocurrent response a planar InP/InGaAs avalanche photodiode is presented for small variations multiplication width. The Zn dopant diffusion front obtained by numerically simulating process. results indicate that while local peak value observed near device edge, it not associated with significant increase in response. Experi...

Single-photon detection concept is the most crucial factor that determines performance of quantum key distribution (QKD) systems. In this paper, a simulator with time domain visualizers and configurable parameters using continuous simulation approach presented for modeling investigating single-photon detectors operating in Gieger mode at wavelength 830 nm. The widely used C30921S silicon avalan...