dorsal/arxiv
View SchemaMultiphoton Antiresonance and Quantum Activation in Driven Systems
| Authors | M. I. Dykman |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0507261 |
| URL | https://arxiv.org/abs/quant-ph/0507261 |
| DOI | 10.1063/1.2138622 |
Abstract
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.
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"abstract": "We show that nonlinear response of a quantum oscillator displays antiresonant\ndips and resonant peaks with varying frequency of the driving field. The effect\nis a consequence of special symmetry and is related to resonant multiphoton\nmixing of several pairs of oscillator states at a time. We also discuss escape\nfrom a metastable state of forced vibrations. Two important examples show that\nthe probability of escape via diffusion over quasienergy is larger than via\ndynamical tunneling provided the relaxation rate exceeds both of them.\nDiffusion dominates even for zero temperature, so that escape occurs via\nquantum rather than thermal activation. The effects can be studied using\nJosephson junctions and Josephson-junction based systems.",
"arxiv_id": "quant-ph/0507261",
"authors": [
"M. I. Dykman"
],
"categories": [
"quant-ph"
],
"doi": "10.1063/1.2138622",
"title": "Multiphoton Antiresonance and Quantum Activation in Driven Systems",
"url": "https://arxiv.org/abs/quant-ph/0507261"
},
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