• Medientyp: E-Artikel; Sonstige Veröffentlichung
  • Titel: Parametric amplification of matter waves in dipolar spinor Bose-Einstein condensates
  • Beteiligte: Deuretzbacher, Frank [VerfasserIn]; Gebreyesus, Garu [VerfasserIn]; Topic, Oliver [VerfasserIn]; Scherer, Manuel [VerfasserIn]; Lücke, Bernd [VerfasserIn]; Ertmer, Wolfgang [VerfasserIn]; Arlt, Jan J. [VerfasserIn]; Klempt, Carsten [VerfasserIn]; Santos, Luis [VerfasserIn]
  • Erschienen: College Park, MD : American Physical Society, 2010
  • Erschienen in: Physical Review A 82 (2010), Nr. 5
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/1895; https://doi.org/10.1103/PhysRevA.82.053608
  • Schlagwörter: Magnetic dipole-dipole interaction ; Alkali metals ; Bose-Einstein condensates ; Alkali metal atoms ; Dipolar interaction ; Amplification ; Magnetic field effects ; Steam condensers ; Statistical mechanics ; Parametric amplification ; Matter waves ; Magnetic field gradient
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  • Beschreibung: Spin-changing collisions may lead under proper conditions to the parametric amplification of matter waves in spinor Bose-Einstein condensates. Magnetic dipole-dipole interactions, although typically very weak in alkalimetal atoms, are shown to play a very relevant role in the amplification process. We show that these interactions may lead to a strong dependence of the amplification dynamics on the angle between the trap axis and the magnetic-field orientation. We analyze as well the important role played by magnetic-field gradients, which also modify strongly the amplification process. Magnetic-field gradients, hence, must be carefully controlled in future experiments, in order to observe clearly the effects of the dipolar interactions in the amplification dynamics. © 2010 The American Physical Society. ; DFG/SFB/407 ; DFG/EXC/QUEST ; ESF/EuroQUASAR
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