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Proceedings Paper

Coherent state statistics from time-resolved photon counting
Author(s): Harish Ravi; Anil Prabhakar
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Paper Abstract

Time resolved photon counting was used to separate the different photon states emitted from a strongly attenuated laser source. We first describe a method to quantify the efficiency of our gated avalanche photo-detector, by relying on known Poissonian statistics. The detector was then optimized under different temperature and bias voltage conditions using the noise equivalent power as a metric. Finally, coherent pulses are sent into a ring cavity, such that the tapped output from the cavity forms a series of time multiplexed pulses, which then yield the photon counting statistics. We observed good agreement between theoretical estimates and experimental observations, to as low as 0.01% probability of detection.

Paper Details

Date Published: 24 January 2011
PDF: 11 pages
Proc. SPIE 7960, Coherent Optical Communication: Components, Subsystems, and Systems, 79600S (24 January 2011); doi: 10.1117/12.875170
Show Author Affiliations
Harish Ravi, Indian Institute of Technology Madras (India)
Anil Prabhakar, Indian Institute of Technology Madras (India)

Published in SPIE Proceedings Vol. 7960:
Coherent Optical Communication: Components, Subsystems, and Systems
Guifang Li; Dieter Stefan Jäger, Editor(s)

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