Quantum tunneling and thermal activation in the parametric
oscillator.
P.D. Drummond, P. Kinsler
Department of Physics
University of Queensland
Queensland 4072
Australia
Phys. Rev. A 40, 4813, (1989).
The mean time taken for the degenerate parametric oscillator
to quantum tunnel between its two above-threshold stable
states is calculated in the large photon-number limit. The
result is compared to an earlier approximate result using a
truncated Fokker-Planck equation in the Wigner
representation. This earlier theory is equivalent to
stochastic electrodynamics. Our quantum theory results
indicate orders of magnitude faster tunneling far above
threshold when compared to the truncated Wigner theory.
Email: Dr.Paul.Kinsler@physics.org