Novel Macroscopic Violation of a Cauchy Schwarz Inequality Using Bunched and Unbunched Twin Beams

  • P. J. Edwards
  • X. Huang
  • Y. Q. Li
Conference paper


We have demonstrated unequivocal macroscopic violations of the Cauchy Schwarz inequalityl: [g 12 (2) (t)]2g 11 (2) (0)g 22 (2) (0), for both hunched and antihunched incoherent light using a series connected pair of infrared emitting diodes2 to generate intensity-correlated twin beams of variable Fano factor, 30 > F i > 0.05. These results show clearly that the macroscopic violation is a fundamental quantum phenomenon, fully consistent with the “classical particle” model of incoherent light beam splitting suggested by Paul3.


Beam Splitting Lower Curve Correlation Measurement Classical Particle Cauchy Schwarz Inequality 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    M.D. Reid and U.P. Walls, “Violations of classical inequalities in quantum optics”, Phys. Rev. A., 34, 2, 1260, (1986).CrossRefGoogle Scholar
  2. 2.
    P.J. Edwards and G.H. Pollard. “Otampon noise correlated operation of electrically coupled semiconductor light emitters’’, Phys. Rev. I.ett., 69, 12, 2867, (1992).Google Scholar
  3. 3.
    H. Paul. “Photon ant ibtnching Rev. Mod. Phys. 54, 4, 1061, (1982).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • P. J. Edwards
    • 1
  • X. Huang
    • 1
  • Y. Q. Li
    • 2
  1. 1.Faculty of Information Sciences and EngineeringUniversity of CanberraBelconnenAustralia
  2. 2.Department of PhysicsUniversity of ArkansasFayettevilleUSA

Personalised recommendations