Demonstrating various quantum effects with two entangled laser beams

B. Hage*, J. Janoušek, S. Armstrong, T. Symul, J. Bernu, H. M. Chrzanowski, P. K. Lam, H. A. Bachor

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    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.

    Original languageEnglish
    Pages (from-to)457-461
    Number of pages5
    JournalEuropean Physical Journal D
    Issue number3
    Publication statusPublished - Aug 2011


    Dive into the research topics of 'Demonstrating various quantum effects with two entangled laser beams'. Together they form a unique fingerprint.

    Cite this