Reduced Deadtime and Higher Rate Photon-Counting Detection Using a Multiplexed Detector Array
Stefania Castelletto, Ivo P. Degiovanni, V Schettini, Alan L. Migdall
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.
, Degiovanni, I.
, Schettini, V.
and Migdall, A.
Reduced Deadtime and Higher Rate Photon-Counting Detection Using a Multiplexed Detector Array, Journal of Modern Optics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=840994
(Accessed September 23, 2023)