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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 10, Iss. 11 — Nov. 1, 1993
  • pp: 2233–2238

Reduction of quantum noise in optical parametric amplification

J. A. Levenson, I. Abram, Th. Rivera, and Ph. Grangier  »View Author Affiliations

JOSA B, Vol. 10, Issue 11, pp. 2233-2238 (1993)

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We experimentally demonstrate that a type-II pulsed optical parametric amplifier operated in a phase-insensitive configuration works as a near-perfect classical optical amplifier whose noise figure approaches 3 dB at high gains. We further demonstrate that, when operated in a phase-sensitive configuration, this amplifier works as a quantum-optical amplifier whose noise figure goes below 3 dB and approaches 0 dB at high gains. The noise figure of 1.45 ± 0.2 dB, measured for a gain of 9 dB, is clearly in the quantum regime.

© 1993 Optical Society of America

Original Manuscript: November 23, 1992
Revised Manuscript: April 13, 1993
Published: November 1, 1993

J. A. Levenson, Ph. Grangier, I. Abram, and Th. Rivera, "Reduction of quantum noise in optical parametric amplification," J. Opt. Soc. Am. B 10, 2233-2238 (1993)

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