dorsal/arxiv
View SchemaControl of tunneling by adapted signals
| Authors | B. I. Ivlev |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0005016 |
| URL | https://arxiv.org/abs/quant-ph/0005016 |
| DOI | 10.1103/PhysRevA.62.062102 |
| Journal | Phys.Rev.A62:062102,2000 |
Abstract
Process of quantum tunneling of particles in various physical systems can be effectively controlled even by a weak and slow varying in time electromagnetic signal if to adapt specially its shape to a particular system. During an under-barrier motion of a particle such signal provides a "coherent" assistance of tunneling by the multi-quanta absorption resulting in a strong enhancement of the tunneling probability. The semiclassical approach based on trajectories in the complex time is developed for tunneling in a non-stationary field. Enhancement of tunneling occurs when a singularity of the signal coincides in position at the complex time plane with a singularity of the classical Newtonian trajectory of the particle. The developed theory is also applicable to the over-barrier reflection of particles and to reflection of classical waves (electromagnetic, hydrodynamic, etc.) from a spatially-smooth medium.
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"abstract": "Process of quantum tunneling of particles in various physical systems can be\neffectively controlled even by a weak and slow varying in time electromagnetic\nsignal if to adapt specially its shape to a particular system. During an\nunder-barrier motion of a particle such signal provides a \"coherent\" assistance\nof tunneling by the multi-quanta absorption resulting in a strong enhancement\nof the tunneling probability. The semiclassical approach based on trajectories\nin the complex time is developed for tunneling in a non-stationary field.\nEnhancement of tunneling occurs when a singularity of the signal coincides in\nposition at the complex time plane with a singularity of the classical\nNewtonian trajectory of the particle. The developed theory is also applicable\nto the over-barrier reflection of particles and to reflection of classical\nwaves (electromagnetic, hydrodynamic, etc.) from a spatially-smooth medium.",
"arxiv_id": "quant-ph/0005016",
"authors": [
"B. I. Ivlev"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.62.062102",
"journal_ref": "Phys.Rev.A62:062102,2000",
"title": "Control of tunneling by adapted signals",
"url": "https://arxiv.org/abs/quant-ph/0005016"
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