Title | Reduced deadtime and higher rate photon-counting detection using a multiplexed detector array |
Publication Type | Journal Article |
Year of Publication | 2007 |
Authors | S. A. Castelletto, I. P. Degiovanni, V. Schettini, and A. L. Migdall |
Journal | Journal of Modern Optics |
Volume | 54 |
Pagination | 337–352 |
Date Published | jan |
ISSN | 0950-0340 |
Keywords | 2007, Single Fellow |
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 continuous and pulsed light sources, both of which are important for quantum metrology and quantum key distribution applications. |
URL | http://arxiv.org/abs/quant-ph/0601102 |