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Publication Citation: Reduced Deadtime and Higher Rate Photon-Counting Detection Using a Multiplexed Detector Array

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Author(s): Stefania Castelletto; Ivo P. Degiovanni; V Schettini; Alan L. Migdall;
Title: Reduced Deadtime and Higher Rate Photon-Counting Detection Using a Multiplexed Detector Array
Published: January 20, 2007
Abstract: We present a scheme for a photon-counting detection system that can be operated at incident photon rates higher than otherwise possible by suppressing the effects of detector deadtime. The method uses an array of N detectors and a 1-by-N optical switch with a control circuit to direct input light to live detectors. Our calculations and models highlight the advantages of the technique. In particular, using this scheme, a group of N detectors provides an improvement in operation rate that can exceed the improvement that would be obtained by a single detector with deadtime reduced by 1/N, even if it were feasible to produce a single detector with such a large improvement in deadtime. We model the system for CW and pulsed light sources, both of which are important for quantum metrology and quantum key distribution applications.
Citation: Journal of Modern Optics
Volume: 54
Issue: 2-3
Pages: pp. 337 - 352
Keywords: deadtime;detection;detector;detector array;photon;photon-counting detector;quantum computation;quantum information
Research Areas: Quantum Optics, Quantum Information, Single Photon Detectors, Quantum Devices, Single Photon Sources, Correlated Photon Radiometry, Quantum Information Technology