Sub-shot-noise high-sensitivity spectroscopy with optical parametric oscillator twin beams

Optics Letters
P H RibeiroC Fabre

Abstract

Nondegenerate optical parametric oscillators generate above-threshold signal and idler beams that have intensity fluctuations correlated at the quantum level (twin beams). We describe what is to our knowledge the first high-sensitivity spectroscopy experiment using twin beams emitted by a cw optical parametric oscillator: a very weak two-photon absorption signal, in the 10(-7) range, is recorded on the 4S(1/2)-5S(1/2) transition of atomic potassium with a noise background that is reduced by 1.9 dB with respect to the shot-noise limit of the light used in the experiment.

References

Nov 17, 1986·Physical Review Letters·L A WuH Wu
Nov 30, 1987·Physical Review Letters·A HeidmannG Camy
May 18, 1992·Physical Review Letters·E S PolzikH J Kimble

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Citations

Jan 22, 2002·Physical Review Letters·Xiaoying LiKunchi Peng
Dec 25, 2015·Optics Express·Vanessa ChilleClaude Fabre
Mar 2, 2017·Optics Letters·Qiang ZhangXiaolong Su
Jul 26, 2017·Scientific Reports·Paul-Antoine MoreauJonathan C F Matthews
Jan 15, 2016·Optics Letters·Avik DuttMichal Lipson
Sep 1, 2018·Light, Science & Applications·Nigam SamantarayMarco Genovese
Jun 13, 2009·Physical Review Letters·Giorgio BridaIvano Ruo Berchera
May 6, 2019·Optics Express·Eugene KnyazevMaria V Chekhova

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