TY  - JOUR
AU  - Marsili, F.
AU  - Bitauld, D.
AU  - Fiore, A.
AU  - Gaggero, A.
AU  - Leoni, R.
AU  - Mattioli, F.
AU  - Divochiy, A.
AU  - Korneev, A.
AU  - Seleznev, V.
AU  - Kaurova, N.
AU  - Minaeva, O.
AU  - Goltsman, G.
PY  - 2009
DA  - 2009//
TI  - Superconducting parallel nanowire detector with photon number resolving functionality
T2  - J. Modern Opt.
JO  - J. Modern Opt.
SP  - 334
EP  - 344
VL  - 56
IS  - 2-3
KW  - PNR
KW  - SSPD
KW  - SNSPD
KW  - thin superconducting films
KW  - photon number resolving detector
KW  - multiplication noise
KW  - telecom wavelength
KW  - NbN
AB  - We present a new photon number resolving detector (PNR), the Parallel Nanowire Detector (PND), which uses spatial multiplexing on a subwavelength scale to provide a single electrical output proportional to the photon number. The basic structure of the PND is the parallel connection of several NbN superconducting nanowires (100 nm-wide, few nm-thick), folded in a meander pattern. Electrical and optical equivalents of the device were developed in order to gain insight on its working principle. PNDs were fabricated on 3-4 nm thick NbN films grown on sapphire (substrate temperature TS=900C) or MgO (TS=400C) substrates by reactive magnetron sputtering in an Ar/N2 gas mixture. The device performance was characterized in terms of speed and sensitivity. The photoresponse shows a full width at half maximum (FWHM) as low as 660ps. PNDs showed counting performance at 80 MHz repetition rate. Building the histograms of the photoresponse peak, no multiplication noise buildup is observable and a one photon quantum efficiency can be estimated to be QE=3% (at 700 nm wavelength and 4.2 K temperature). The PND significantly outperforms existing PNR detectors in terms of simplicity, sensitivity, speed, and multiplication noise.
SN  - 0950-0340
UR  - http://www.tandfonline.com/doi/abs/10.1080/09500340802220729
UR  - https://doi.org/10.1080/09500340802220729
DO  - 10.1080/09500340802220729
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=701), last updated on Fri, 14 May 2021 22:03:36 -0500
ID  - Marsili_etal2009
ER  -