COMPARATIVE TEST OF TWO METHODS OF QUANTUM EFFICIENCY ABSOLUTE MEASUREMENT BASED ON SQUEEZED VACUUM DIRECT DETECTION-Reference-Cited by-同舟云学术

COMPARATIVE TEST OF TWO METHODS OF QUANTUM EFFICIENCY ABSOLUTE MEASUREMENT BASED ON SQUEEZED VACUUM DIRECT DETECTION

Published:2011-01 Issue:supp01 Volume:09 Page:251-262
ISSN:0219-7499
Container-title:International Journal of Quantum Information
language:en
Short-container-title:Int. J. Quantum Inform.

Author:

AGAFONOV I. N.¹,CHEKHOVA M. V.¹,PENIN A. N.¹,RYTIKOV G. O.¹,SHUMILKINA O. A.¹,ISKHAKOV T. SH.²

Affiliation:

1. Physics Department, Moscow State University, Leninskiye Gory, Moscow, 119991, Russia

2. Max-Planck Institute for the Science of Light, Guenther-Scharowsky-Str. 1/Bau 24, Erlangen, D-91058, Germany

Abstract

We realize and test in experiment a method recently proposed for measuring absolute quantum efficiency of analog photodetectors. Similar to the traditional (Klyshko) method of absolute calibration, the new one is based on the direct detection of two-mode squeezed vacuum at the output of a traveling wave OPA. However, in the new method, one measures the difference-photocurrent variance rather than the correlation function of photocurrents (number of coincidences), which makes the technique applicable for high-gain OPA. In this work we test the new method versus the traditional one for the case of photon-counting detectors where both techniques are valid.

Publisher

World Scientific Pub Co Pte Lt

Subject

Physics and Astronomy (miscellaneous)

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0219749911007265

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