Low-noise single-photon counting superconducting nanowire detectors at infrared wavelengths up to 29 $\mu$m

Gregor G. Taylor, Alexander B. Walter, Boris Korzh +7

We report on the extension of the spectral sensitivity of superconducting nanowire single-photon detectors to a wavelength of 29 $\mu$m. This represents the first demonstration of a…