We review the current status of single-photon-source and single-photon-detector
technologies operating at wavelengths from the ultraviolet to the infrared. We discuss …

Single-photon detectors based on superconducting nanowires (SSPDs or SNSPDs) have
rapidly emerged as a highly promising photon-counting technology for infrared wavelengths …

We investigate the recovery of superconducting NbN-nanowire photon counters after
detection of an optical pulse at a wavelength of 1550 nm⁠, and present a model that …

We describe an approach to the integrated control and measurement of a large-scale
superconducting multiqubit array comprising up to 10 8 physical qubits using a proximal …

The paper reviews the main aspects of nonequilibrium hot-electron phenomena in
superconductors and various theoretical models developed to describe the hot-electron …

We investigate the source of the large variations in the observed detection efficiencies of
superconducting nanowire single-photon detectors between many nominally identical …

A photon-number-resolving detector based on a four-element superconducting nanowire
single photon detector is demonstrated to have sub-30-ps resolution in measuring the arrival …

A multi-element superconducting nanowire single photon detector (MESNSPD) is presented
that consists of multiple independently-biased superconducting nanowire single photon …

A bipartite multiphoton entangled state is created through stimulated parametric down-
conversion of strong laser pulses in a nonlinear crystal. It is shown how detectors that do not …

Abstract Research activities in Superconducting Nanowire Single Photon Detectors
(SNSPDs) have exhibited major progress over last two decades. The low dark count rate …