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American Journal of Physics -- July 2009 -- Volume 77, Issue 7, pp. 667

Low-cost coincidence-counting electronics for undergraduate quantum optics

D. Branning1, S. Bhandari1, and M. Beck2

1Department of Physics, Trinity College, 300 Summit Street, Hartford, Connecticut 06106
2Department of Physics, Whitman College, Walla Walla, Washington 99362

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Coincidence counting is a necessary ingredient for quantum optics experiments at the undergraduate level, but cost has created an entry barrier for many schools. We present a design of a coincidence-counting module that replaces the traditional method based on time-to-amplitude conversion and pulse-height analysis. Our module accepts inputs from up to four detectors, has a coincidence-time window of less than 10 ns, and has a throughput of more than triple that of the traditional method. The cost of our coincidence-counting module is less than 5% of the cost of the traditional method.

© 2009 American Association of Physics Teachers

KEYWORDS and PACS

Keywords

coincidence circuits, coincidence techniques, nuclear electronics, photon counting, physics education, pulse height analysers, quantum optics, student experiments

PACS

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History
Received Jan 2008
Accepted Mar 2009
Online Jun 2009

PUBLICATION DATA

ISSN

0002-9505 (print)  

Publisher

$abstract.society.value is a Member of CrossRef American Association of Physics Teachers

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1119/1.3116803

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