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Vortex-assisted mechanism of photon counting in a superconducting nanowire single-photon detector revealed by external magnetic field
We use external magnetic field to probe the detection mechanism of superconducting nanowire single photon detector. We argue that the hot belt model (which assumes partial suppression of the superconducting order parameter $\Delta$ across the whole width of the superconducting nanowire after absorption of the single photon) does not explain …