Single-photon detectors based on superconducting thin films have become a viable class of
technologies for widespread usage in quantum optics. In this tutorial paper we introduce the …

Generally, a superconducting nanowire single-photon detector (SNSPD) is composed of
wires with a typical width of∼ 100 nm. Recent studies have found that superconducting …

Single-photon detection via absorption in current-biased nanoscale superconducting
structures has become a preferred technology in quantum optics and related fields. Single …

Superconducting nanowire single photon detectors (SNSPDs) are the highest-performing
technology for time-resolved single-photon counting from the UV to the near-infrared. The …

Superconducting niobium nitride (NbN) continues to be investigated decades on, largely in
part to its advantageous superconducting properties and wide use in superconducting …

The current density in a superconductor with turnarounds or constrictions is nonuniform due
to a geometrical current-crowding effect. This effect reduces the critical current in the …

The paper is devoted to several recent rather fundamental achievements in the field of
superconducting nanostrip single-photon detectors which make an impact on understanding …

Using the standard Bardeen-Cooper-Schrieffer (BCS) theory, we revise microscopic
derivation of the superconductor-insulator boundary conditions for the Ginzburg-Landau …

To facilitate high optical coupling efficiency and absorptance, the active area of a
superconducting nano/microstrip single-photon detector (SNSPD/SMSPD) is often designed …

Deterministic sources of high-fidelity entangled qubit pairs encoded in the dual-rail photonic
basis, ie, presence of a single photon in one of two orthogonal modes, are a key enabling …