TITLE

Demonstrating various quantum effects with two entangled laser beams

AUTHOR(S)
Hage, B.; Janou�ek, J.; Armstrong, S.; Symul, T.; Bernu, J.; Chrzanowski, H.; Lam, P.; Bachor, H.
PUB. DATE
August 2011
SOURCE
European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Aug2011, Vol. 63 Issue 3, p457
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the preparation of entangled two mode squeezed states of yet unseen quality. Based on a measurement of the covariance matrix we found a violation of the Reid and Drummond EPR-criterion at a value of only 0.36 � 0.03 compared to the threshold of 1. Furthermore, quantum state tomography was used to extract a single photon Fock state solely based on homodyne detection, demonstrating the strong quantum features of this pair of laser-beams. The probability for a single photon in this ensemble measurement exceeded 2/3.
ACCESSION #
63497999

Tags: LASER beams;  QUANTUM theory;  ANALYSIS of covariance;  PHOTONS;  PROBABILITIES;  MEASUREMENT;  MATRICES

 

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