Quantum interference in the classically forbidden region: a parametric oscillator
arXiv:cond-mat/0703469 · doi:10.1103/PhysRevA.76.010102
Abstract
We study tunneling between period two states of a parametrically modulated oscillator. The tunneling matrix element is shown to oscillate with the varying frequency of the modulating field. The effect is due to spatial oscillations of the wave function and the related interference in the classically forbidden region. The oscillations emerge already in the ground state of the oscillator Hamiltonian in the rotating frame, which is quartic in the momentum.
Submitted to PRA
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