Wave mixing of hybrid Bogoliubov modes in a Bose-Einstein condensate
Data(s) |
01/11/2003
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Resumo |
Mode-mixing of coherent excitations of a trapped Bose-Einstein condensate is modeled using the Bogoliubov approximation. Calculations are presented for second-harmonic generation between the two lowest-lying even-parity m=0 modes in an oblate spheroidal trap. Hybridization of the modes of the breather (l=0) and surface (l=4) states leads to the formation of a Bogoliubov dark state near phase-matching resonance so that a single mode is coherently populated. Efficient harmonic generation requires a strong coupling rate, sharply-defined and well-separated frequency spectrum, and good phase matching. We find that in all three respects the quantal results are significantly different from hydrodynamic predictions. Typically the second-harmonic conversion rate is half that given by an equivalent hydrodynamic estimate. |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
McPeake , D & McCann , J 2003 , ' Wave mixing of hybrid Bogoliubov modes in a Bose-Einstein condensate ' Physical Review A , vol 68 , no. 5 , pp. 536101-536105 . DOI: 10.1103/PhysRevA.68.053610 |
Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/3100 #Physics and Astronomy(all) #/dk/atira/pure/subjectarea/asjc/3100/3107 #Atomic and Molecular Physics, and Optics |
Tipo |
article |