Physics – Quantum Physics
Scientific paper
2005-07-27
Physics
Quantum Physics
An invited talk at "Unsolved Problems of Noise", 2005
Scientific paper
10.1063/1.2138622
We show that nonlinear response of a quantum oscillator displays antiresonant dips and resonant peaks with varying frequency of the driving field. The effect is a consequence of special symmetry and is related to resonant multiphoton mixing of several pairs of oscillator states at a time. We also discuss escape from a metastable state of forced vibrations. Two important examples show that the probability of escape via diffusion over quasienergy is larger than via dynamical tunneling provided the relaxation rate exceeds both of them. Diffusion dominates even for zero temperature, so that escape occurs via quantum rather than thermal activation. The effects can be studied using Josephson junctions and Josephson-junction based systems.
No associations
LandOfFree
Multiphoton Antiresonance and Quantum Activation in Driven Systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multiphoton Antiresonance and Quantum Activation in Driven Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiphoton Antiresonance and Quantum Activation in Driven Systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-495247