Readout of superconducting nanowire single-photon detectors at high count rates
- 11 April 2013
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 113 (14)
- https://doi.org/10.1063/1.4799397
Abstract
Superconducting nanowire single-photon detectors are set apart from other photon counting technologies above all else by their extremely high speed, with few-ten-ps timing resolution, and recovery times $\tau_R\lesssim$10 ns after a detection event. In this work, however, we identify in the conventional electrical readout scheme a nonlinear interaction between the detector and its readout which can make stable, high-efficiency operation impossible at count rates even an order-of-magnitude less than $\tau_R^{-1}$. We present detailed experimental confirmation of this, and a theoretical model which quantitatively explains our observations. Finally, we describe an improved readout which circumvents this problem, allowing these detectors to be operated stably at high count rates, with a detection efficiency penalty determined purely by their inductive reset time.Comment: 6 pages, 4 figure
Keywords
This publication has 25 references indexed in Scilit:
- Timing performance of 30-nm-wide superconducting nanowire avalanche photodetectorsApplied Physics Letters, 2012
- Superconducting nanowire single-photon detectors: physics and applicationsSuperconductor Science and Technology, 2012
- Photonic quantum simulatorsNature Physics, 2012
- Quantum interference and manipulation of entanglement in silicon wire waveguide quantum circuitsNew Journal of Physics, 2012
- High-speed and high-efficiency travelling wave single-photon detectors embedded in nanophotonic circuitsNature Communications, 2012
- Electrothermal feedback in superconducting nanowire single-photon detectorsPhysical Review B, 2009
- Photon-number-resolution with sub-30-ps timing using multi-element superconducting nanowire single photon detectorsJournal of Modern Optics, 2009
- Measuring intensity correlations with a two-element superconducting nanowire single-photon detectorPhysical Review A, 2008
- Imaging Intracellular Fluorescent Proteins at Nanometer ResolutionScience, 2006
- Self-heating in normal metals and superconductorsReviews of Modern Physics, 1987