dorsal/arxiv
View SchemaTime scale of forerunners in quantum tunneling
| Authors | G. Garcia-Calderon, Jorge Villavicencio, F. Delgado, J. G. Muga |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0206020 |
| URL | https://arxiv.org/abs/quant-ph/0206020 |
| DOI | 10.1103/PhysRevA.66.042119 |
Abstract
The forerunners preceding the main tunneling signal of the wave created by a source with a sharp onset or by a quantum shutter, have been generally associated with over-the-barrier (non-tunneling) components. We demonstrate that, while this association is true for distances which are larger than the penetration lenght, for smaller distances the forerunner is dominated by under-the-barrier components. We find that its characteristic arrival time is inversely proportional to the difference between the barrier energy and the incidence energy, a tunneling time scale different from both the phase time and the B\"uttiker-Landauer (BL) time.
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"abstract": "The forerunners preceding the main tunneling signal of the wave created by a\nsource with a sharp onset or by a quantum shutter, have been generally\nassociated with over-the-barrier (non-tunneling) components. We demonstrate\nthat, while this association is true for distances which are larger than the\npenetration lenght, for smaller distances the forerunner is dominated by\nunder-the-barrier components. We find that its characteristic arrival time is\ninversely proportional to the difference between the barrier energy and the\nincidence energy, a tunneling time scale different from both the phase time and\nthe B\\\"uttiker-Landauer (BL) time.",
"arxiv_id": "quant-ph/0206020",
"authors": [
"G. Garcia-Calderon",
"Jorge Villavicencio",
"F. Delgado",
"J. G. Muga"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.66.042119",
"title": "Time scale of forerunners in quantum tunneling",
"url": "https://arxiv.org/abs/quant-ph/0206020"
},
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