Quantum tomography of a laser beam interacting with cold atoms T. Coudreau, L. Vernac, A. Z. Khoury, G. Breitenbach and E. Giacobino Europhys. Lett., 46 6 (1999) 722-727 Published online: 01 September 2002 DOI: 10.1209/epl/i1999-00325-6