Abstract We present a new photon number resolving detector, the Parallel Nanowire Detector (PND)[1], which uses spatial multiplexing on a subwavelength scale to provide an electrical output proportional to the photon number. PNDs were fabricated on 3-4 nm thick NbN films grown on sapphire or MgO substrates. The photoresponse pulse is 650ps long (full width at half maximum). The histograms of the photoresponse peak show no multiplication noise and the one photon quantum efficiency is 3%(at 700 nm wavelength, ...
Superconducting nanowire photon number resolving detector at telecom wavelength
Alessandro Gaggero;Roberto Leoni;Francesco Mattioli;
2008
Abstract
Abstract We present a new photon number resolving detector, the Parallel Nanowire Detector (PND)[1], which uses spatial multiplexing on a subwavelength scale to provide an electrical output proportional to the photon number. PNDs were fabricated on 3-4 nm thick NbN films grown on sapphire or MgO substrates. The photoresponse pulse is 650ps long (full width at half maximum). The histograms of the photoresponse peak show no multiplication noise and the one photon quantum efficiency is 3%(at 700 nm wavelength, ...File in questo prodotto:
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