Photon-number-resolution with sub-30-ps timing using multi-element superconducting nanowire single photon detectors
- 20 January 2009
- journal article
- research article
- Published by Informa UK Limited in Journal of Modern Optics
- Vol. 56 (2-3), 364-373
- https://doi.org/10.1080/09500340802411989
Abstract
A photon-number-resolving detector based on a four-element superconducting nanowire single photon detector is demonstrated to have sub-30-ps resolution in measuring the arrival time of individual photons. This detector can be used to characterise the photon statistics of non-pulsed light sources and to mitigate dead-time effects in high-speed photon counting applications. Furthermore, a 25% system detection efficiency at 1550 nm was demonstrated, making the detector useful for both low-flux source characterization and high-speed photon counting and quantum communication applications. The design, fabrication, and testing of this detector are described, and a comparison between the measured and the theoretical performance is presented.Keywords
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