Title :
Multi-Element Superconducting Nanowire Single-Photon Detector
Author :
Dauler, Eric A. ; Robinson, Bryan S. ; Kerman, Andrew J. ; Yang, Joel K.W. ; Rosfjord, Kristine M. ; Anant, Vikas ; Voronov, Boris ; Tsman, Gregory Gol ; Berggren, Karl K.
Author_Institution :
Massachusetts Inst. of Technol., Cambridge
fDate :
6/1/2007 12:00:00 AM
Abstract :
A multi-element superconducting nanowire single photon detector (MESNSPD) is presented that consists of multiple independently-biased superconducting nanowire single photon detector (SNSPD) elements that form a continuous active area. A two-element SNSPD has been fabricated and tested, showing no measurable crosstalk between the elements, sub-50-ps relative timing jitter, and four times the maximum counting rate of a single SNSPD with the same active area. The MESNSPD can have a larger active area and higher speed than a single-element SNSPD and the input optics can be designed so that the detector provides spatial, spectral or photon number resolution.
Keywords :
nanotechnology; nanowires; photon counting; superconducting photodetectors; timing jitter; MESNSPD; counting rate; multielement superconducting nanowire single-photon detector; timing jitter; Counting circuits; Optical arrays; Optical coupling; Optical crosstalk; Optical noise; Optical sensors; Radiation detectors; Sensor arrays; Signal resolution; Spatial resolution; Niobium nitride; photon-counting-array; photon-number-resolution; single-photon-detector;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.897372
