Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Communications

Sub shot-noise fluctuations in the intensity sum of two coupled beams

Gagik Yu. Kryuchkyan, Karen V. Kheruntsyan

Published Oct 1, 1992• 2 citations
Publisher
DOI
10.1016/0030-4018(92)90194-v

Related papers

Experimental demonstration of sub-shot-noise intensity correlations in an intense twin beam

Maria Bondani, Alessia Allevi, Guido Zambra +4 more

The European Physical Journal Special Topics•Jun 17, 2008•1 citation

Sub shot-noise intensity fluctuations in a four-wave mixing oscillator

Weiping Zhang, Daniel F. Walls

Optics Communications•Nov 1, 1990•5 citations

Quantum noise reduction by beam coupling in photorefractive media

Mark E. Saffman

I propose a new approach to generation of sub-Poissonian twin beams. A perturbative analysis shows that frequency dependent redistribution of fluctuations between photorefractively coupled beams results in output beams with sub shot noise intensity correlations.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•May 6, 1996•0 citations

Quantum noise reduction by beam coupling in photorefractive media

Mark E. Saffman

Quantum noise reduction by beam coupling inphotorefractive mediaMark SaffmanDepartment of Optics and Fluid Dynamics,RisO National Laboratory, DK-4000 Roskilde, Denmarke-mail: saffman@risoe.dkABSTRACTI propose a new approach to generation of sub-Poissonian twin beams. A perturbative analysisshows that frequency dependent redistribution of fluctuations between photorefractivelycoupled beams results in output beams with sub shot noise intensity correlations.Keywords: quantum optics, squeezing, photorefractives1. INTRODUCTIONTwin beams that exhibit intensity correlations below the shot noise limit have been generated

•Jan 1, 1996•0 citations

Violation of a classical Cauchy-Schwarz inequality in photon noise spectra

Yongqing Li, Paul J Edwards, Xu Guang Huang +1 more

A Cauchy-Schwarz inequality in photon noise spectra is derived and discussed for macroscopic fields of light. Violation of this Cauchy-Schwarz inequality is demonstrated experimentally in quantum noise-correlated light beams radiated from a pair of electrically coupled light-emitting diodes. Our measurements directly demonstrate that the violation of this Cauchy-Schwarz inequality can be observed in the absence of sub-shot noise fluctuations in either the single-beam intensity or the dual-beam intensity difference. Therefore, the dual-beam quantum correlation condition required for the violation of this Cauchy-Schwarz inequality is not associated with sub-shot noise fluctuations.

Journal of Optics B Quantum and Semiclassical Optics•May 24, 2000•8 citations

An open problem in quantum shot noise

Gerhard C. Hegerfeldt

Lecture notes in mathematics•Jan 1, 1990•0 citations
Quantum noise reduction by beam coupling inphotorefractive mediaMark SaffmanDepartment of Optics and Fluid Dynamics,RisO National Laboratory, DK-4000 Roskilde, Denmarke-mail: saffman@risoe.dkABSTRACTI propose a new approach to generation of sub-Poissonian twin beams. A perturbative analysisshows that frequency dependent redistribution of fluctuations between photorefractivelycoupled beams results in output beams with sub shot noise intensity correlations.Keywords: quantum optics, squeezing, photorefractives1. INTRODUCTIONTwin beams that exhibit intensity correlations below the shot noise limit have been generated
A Cauchy-Schwarz inequality in photon noise spectra is derived and discussed for macroscopic fields of light. Violation of this Cauchy-Schwarz inequality is demonstrated experimentally in quantum noise-correlated light beams radiated from a pair of electrically coupled light-emitting diodes. Our measurements directly demonstrate that the violation of this Cauchy-Schwarz inequality can be observed in the absence of sub-shot noise fluctuations in either the single-beam intensity or the dual-beam intensity difference. Therefore, the dual-beam quantum correlation condition required for the violation of this Cauchy-Schwarz inequality is not associated with sub-shot noise fluctuations.