Quantum-field dynamics of expanding and contracting Bose-Einstein condensates
| Autor: | Craig Savage, B. J. Dabrowska-Wüster, Sebastian Wüster, John Close, Susan M. Scott |
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| Rok vydání: | 2007 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Kerr effect FOS: Physical sciences Quantum Physics Two-body problem Atomic and Molecular Physics and Optics law.invention Condensed Matter - Other Condensed Matter Many-body problem law Quantum electrodynamics Quantum mechanics Coherent states Quantum field theory Feshbach resonance Quantum statistical mechanics Bose–Einstein condensate Other Condensed Matter (cond-mat.other) |
| DOI: | 10.48550/arxiv.0709.1362 |
| Popis: | We analyze the dynamics of quantum statistics in a harmonically trapped Bose-Einstein condensate, whose two-body interaction strength is controlled via a Feshbach resonance. From an initially non-interacting coherent state, the quantum field undergoes Kerr squeezing, which can be qualitatively described with a single mode model. To render the effect experimentally accessible, we propose a homodyne scheme, based on two hyperfine components, which converts the quadrature squeezing into number squeezing. The scheme is numerically demonstrated using a two-component Hartree-Fock-Bogoliubov formalism. Comment: 9 pages, 4 figures |
| Databáze: | OpenAIRE |
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