An acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate
| Autor: | Josselin Ruaudel, Denis Boiron, Marie Bonneau, Guthrie B. Partridge, Christoph I Westbrook, Jean-Christophe Jaskula, Raphael Lopes |
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| Přispěvatelé: | Laboratoire Charles Fabry / Optique atomique, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
[PHYS.COND.GAS]Physics [physics]/Condensed Matter [cond-mat]/Quantum Gases [cond-mat.quant-gas]
phonons General Physics and Astronomy FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas law.invention Trap (computing) law Quantum mechanics Speed of sound 0103 physical sciences medicine Physics::Atomic Physics 010306 general physics Physics Condensed Matter::Quantum Gases [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] Condensed Matter::Other Stiffness Casimir effect dynamical Casimir effect Quantum Gases (cond-mat.quant-gas) medicine.symptom quantum gases Condensed Matter - Quantum Gases pacs 03.75.Kk 67.10.Jn 42.50.Lc Frequency modulation Bose–Einstein condensate |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2012, 109, pp.220401. ⟨10.1103/PhysRevLett.109.220401⟩ |
| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/PhysRevLett.109.220401⟩ |
| Popis: | We have realized an acoustic analog to the Dynamical Casimir effect. The density of a trapped Bose-Einstein condensate is modulated by changing the trap stiffness. We observe the creation of correlated excitations with equal and opposite momenta, and show that for a well defined modulation frequency, the frequency of the excitations is half that of the trap modulation frequency. Includes supplemental information |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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