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\pm0.03 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.
@article{arxiv.1103.4199,
title = {Demonstrating various quantum effects with two entangled laser beams},
author = {B. Hage and J. Janoušek and S. Armstrong and T. Symul and J. Bernu and H. M. Chrzanowski and P. K. Lam and H. A. Bachor},
journal= {arXiv preprint arXiv:1103.4199},
year = {2015}
}