LANGEVIN EQUATION FOR THE SQUEEZING OF LIGHT BY MEANS OF A
PARAMETRIC OSCILLATOR - COMMENT
P. Kinsler, P.D. Drummond.
Department of Physics
University of Queensland
Queensland 4072
Australia
Phys. Rev. A 44, 7848 (1991).
We comment on statements made about quantum representation theory
in the paper by T.W. Marshall and E. Santos [Phys. Rev. A 41,
1582 (1990)]. Results are presented which show that correct
results can be obtained from Langevin equations derived from the
positive-P representation, even when those obtained by truncation
of the Wigner time-evolution equation give incorrect results.
Email: Dr.Paul.Kinsler@physics.org