Nonequilibrium Josephson Oscillations in Bose-Einstein Condensates without Dissipation
| Autor: | Mauricio Trujillo-Martinez, Johann Kroha, Anna Posazhennikova |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Josephson effect
Rabi cycle FOS: Physical sciences General Physics and Astronomy law.invention Pi Josephson junction law Condensed Matter::Superconductivity Quantum mechanics ddc:530 Quantum Condensed Matter - Statistical Mechanics Quantum tunnelling Condensed Matter::Quantum Gases Physics Quantum Physics Statistical Mechanics (cond-mat.stat-mech) Condensed Matter::Other Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter - Other Condensed Matter Quantum Gases (cond-mat.quant-gas) Quasiparticle Superconducting tunnel junction Condensed Matter - Quantum Gases Quantum Physics (quant-ph) Bose–Einstein condensate Other Condensed Matter (cond-mat.other) |
| Zdroj: | Physical Review Letters. 103 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.103.105302 |
| Popis: | We perform a detailed field theoretical study of nonequilibrium Josephson oscillations between interacting Bose-Einstein condensates confined in a finite-size double-well trap. We find that the Josephson junction can sustain multiple undamped Josephson oscillations up to a characteristic time scale $\tau_c$ without quasipartcles being excited in the system. This may explain recent related experiments. At larger times the dynamics of the junction is governed by fast Rabi oscillations between the descrete quasiparticle levels. We predict that a selftrapped BEC state will be destroyed by these Rabi oscillations. Comment: 4 pages, 4 figures, final version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|