dorsal/arxiv
View SchemaQuantum dynamics of bosons in a double-well potential: Josephson oscillations, self-trapping and ultralong tunneling times
| Authors | A. N. Salgueiro, A. F. R. de Toledo Piza, G. B. Lemos, R. Drumond, M. C. Nemes, M. Weidemueller |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608222 |
| URL | https://arxiv.org/abs/quant-ph/0608222 |
| DOI | 10.1140/epjd/e2007-00224-4 |
| Journal | Eur. Phys. J. D 44 3 (2007) 537-540 |
Abstract
The dynamics of the population imbalance of bosons in a double-well potential is investigated from the point of view of many-body quantum mechanics in the framework of the two-mode model. For small initial population imbalances, coherent superpositions of almost equally spaced energy eigenstates lead to Josephson oscillations. The suppression of tunneling at population imbalance beyond a critical value is related to a high concentration of initial state population in the region of the energy spectrum with quasi-degenerate doublets resulting in imbalance oscillations with a very small amplitude. For unaccessible long times, however, the system recovers the regime of Josephson oscillations.
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"abstract": "The dynamics of the population imbalance of bosons in a double-well potential\nis investigated from the point of view of many-body quantum mechanics in the\nframework of the two-mode model. For small initial population imbalances,\ncoherent superpositions of almost equally spaced energy eigenstates lead to\nJosephson oscillations. The suppression of tunneling at population imbalance\nbeyond a critical value is related to a high concentration of initial state\npopulation in the region of the energy spectrum with quasi-degenerate doublets\nresulting in imbalance oscillations with a very small amplitude. For\nunaccessible long times, however, the system recovers the regime of Josephson\noscillations.",
"arxiv_id": "quant-ph/0608222",
"authors": [
"A. N. Salgueiro",
"A. F. R. de Toledo Piza",
"G. B. Lemos",
"R. Drumond",
"M. C. Nemes",
"M. Weidemueller"
],
"categories": [
"quant-ph"
],
"doi": "10.1140/epjd/e2007-00224-4",
"journal_ref": "Eur. Phys. J. D 44 3 (2007) 537-540",
"title": "Quantum dynamics of bosons in a double-well potential: Josephson oscillations, self-trapping and ultralong tunneling times",
"url": "https://arxiv.org/abs/quant-ph/0608222"
},
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