nl0c00246_si_001.pdf (2.69 MB)
Demonstration of a Thermally Coupled Row-Column SNSPD Imaging Array
journal contribution
posted on 2020-02-24, 15:44 authored by Jason P. Allmaras, Emma E. Wollman, Andrew D. Beyer, Ryan M. Briggs, Boris A. Korzh, Bruce Bumble, Matthew D. ShawWhile
single-pixel superconducting nanowire single photon detectors
(SNSPDs) have demonstrated remarkable efficiency and timing performance
from the UV to near-IR, scaling these devices to large imaging arrays
remains challenging. Here, we propose a new SNSPD multiplexing system
using thermal coupling and detection correlations between two photosensitive
layers of an array. Using this architecture with the channels of one
layer oriented in rows and the second layer in columns, we demonstrate
imaging capability in 16-pixel arrays with accurate spot tracking
at the few-photon level. We also explore the performance trade-offs
of orienting the top layer nanowires parallel and perpendicular to
the bottom layer. The thermally coupled row-column scheme is readily
able to scale to the kilopixel size with existing readout systems
and, when combined with other multiplexing architectures, has the
potential to enable megapixel scale SNSPD imaging arrays.
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megapixel scale SNSPD imaging arraysrow-column schemereadout systemsSNSPD multiplexing systemimaging arraysRow-Column SNSPD Imaging Arrayfew-photon level16- pixel arraysbottom layersingle-pixel superconducting nanowirephoton detectorsmultiplexing architecturesimaging capabilitylayer nanowiresdetection correlationskilopixel sizeUVperformance trade-offstiming performance
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