Capacitive readout and gating of superconducting single photon detectors
2013 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 84, no 5, 053108Article in journal (Refereed) Published
We propose and develop a readout scheme for superconducting single-photon detectors based on an integrated circuit, relaxing the need for large bandwidth amplification and resulting in voltage steps proportional to the number of detected photons. We also demonstrate time gating, to filter scattered light in time and reduce dark counts. This could lead to a higher signal-to-noise ratio. The gate pulse is generated on the detection of a photon created by a spontaneous parametric down-conversion source, heralding the presence of a second photon. These two schemes could find applications within advanced multi-array imaging detection systems.
Place, publisher, year, edition, pages
2013. Vol. 84, no 5, 053108
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-92035DOI: 10.1063/1.4805055ISI: 000319999300009OAI: oai:DiVA.org:su-92035DiVA: diva2:637152
FunderThe Wenner-Gren Foundation