Spectral cut-off in the efficiency of the resistive state formation caused by absorption of a single-photon in current-carrying superconducting nano-strips
By Alexei Semenov, A. Engel, Heinz-Wilhelm Hubers, Konstantin Ilin, Michael Siegel Dlr Institute of Planetary Research, Berlin, Germany, Institute of Micro-, Nanoelectronic Systems, U. Karlsruhe. 2004
154 citations recorded by the source corpus.
Abstract.We have studied supercurrent-assisted formation of the resistive state in nano-structured disordered superconducting Nb(N) films after absorption of a single optical to near-infrared photon. The efficiency of the resistive state formation has a pronounced spectral cut-off; corresponding threshold photon energy decreases with the bias current. Analysis of the experimental data in the framework of the refined hot-spot model suggests that the quantum yield for near-infrared photons increases with the photon energy. Relaxation of the resistive state depends on the photon energy making the phenomena feasible for the development of energy resolving single-photon detectors.
Subfields: Astronomy and Astrophysics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/f9e818fab57f2add2f7e048559f020347a758b8e
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In Condensed Matter Physics
Citations in the corpus
- Multi-Element Superconducting Nanowire Single-Photon Detector (2007, unknown): “The absorption of a photon in the wire depletes the number of superconducting carriers in a small region, reducing the critical current density such that the critical current is exceeded and a small length of wire becomes resistive [10], [11].”
- Single-Photon Detection by a Dirty Current-Carrying Superconducting Strip Based on the Kinetic-Equation Approach (2016, background): “Besides, some of these models [1, 4, 6] operate with the number of nonequilibrium quasiparticles in order to find the suppression of magnitude of superconducting order parameter |∆|.”