Reproducible mesoscopic superpositions of Bose-Einstein condensates and mean-field chaos
| Autor: | Christoph Weiss, Niklas Teichmann, Stephan Arlinghaus, Bettina Gertjerenken |
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| Rok vydání: | 2010 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Mesoscopic physics FOS: Physical sciences Quantum entanglement Atomic and Molecular Physics and Optics Quantum chaos law.invention Superposition principle Quantum Gases (cond-mat.quant-gas) law Phase space Quantum mechanics Condensed Matter - Quantum Gases Ground state Quantum Bose–Einstein condensate |
| Zdroj: | Physical Review A. 82 |
| ISSN: | 1094-1622 1050-2947 |
| Popis: | In a parameter regime for which the mean-field (Gross-Pitaevskii) dynamics becomes chaotic, mesoscopic quantum superpositions in phase space can occur in a double-well potential which is shaken periodically. For experimentally realistic initial states like the ground state of some 100 atoms, the emergence of mesoscopic quantum superpositions in phase space is investigated numerically. It is shown to be reproducible even if the initial conditions slightly change. While the final state is not a perfect superposition of two distinct phase-states, the superposition is reached an order of magnitude faster than in the case of the collapse and revival phenomenon. Furthermore, a generator of entanglement is identified. 7 pages, 7 png figures, accepted for publication in Phys. Rev. A |
| Databáze: | OpenAIRE |
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