Document 
Eur. Phys. J. D 27, 181-191 (2003)
DOI: 10.1140/epjd/e2003-00263-9
Four modes of optical parametric operation for squeezed state generation
U.L. Andersen1, 2, B.C. Buchler1, P.K. Lam1, J.W. Wu1, J.R. Gao3 and H.-A. Bachor11 Department of Physics, Faculty of Science, The Australian National University, ACT 0200, Australia
2 Department of Physics, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
3 Institute of Opto-Electronics, Shanxi University, Taiyuan, Shanxi 030006, P.R. China
andersen@kerr.physik.uni-erlangen.de
(Received 6 August 2002 / Received in final form 10 March 2003 Published online 26 August 2003 )
Abstract
We report a versatile instrument, based on a monolithic optical
parametric amplifier, which reliably generates four different
types of squeezed light. We obtained vacuum squeezing,
low power amplitude squeezing, phase squeezing
and bright amplitude squeezing. We show a complete analysis of this light,
including a full quantum state tomography. In addition we demonstrate
the direct detection of the squeezed state statistics without the aid
of a spectrum analyser.
This technique makes the nonclassical properties directly visible and
allows complete
measurement of the statistical moments of the squeezed quadrature.
42.50.Dv - Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2003