Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates

This paper presents Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates. The condensate consists of N=10/sup 5/ atoms of /sup 87/Rb which was excited at wavenumber k by using two Bragg beams. Results are analyzed by numerically solving the Gross-Pitaevsk...

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Published in2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665) p. 185
Main Authors Steihhauer, J., Katz, N., Ozeri, R., Davidson, N., Tozzo, C., Dalfovo, F.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Atomic measurements
Equations
Frequency
Gases
Linear discriminant analysis
Physics
Pulse measurements
Scattering
Solids
Spectroscopy
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Abstract This paper presents Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates. The condensate consists of N=10/sup 5/ atoms of /sup 87/Rb which was excited at wavenumber k by using two Bragg beams. Results are analyzed by numerically solving the Gross-Pitaevskii (GP) equation for the order parameter of the condensate. This study shows that the response of the condensate to a Bragg pulse is indeed significantly affected by the radial degrees of freedom. By using Bragg pulses longer than in previous measurements, this multi-branch spectrum is resolved, finding good agreement with the predictions of Gross-Pitaevskii theory.
AbstractList This paper presents Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates. The condensate consists of N=10/sup 5/ atoms of /sup 87/Rb which was excited at wavenumber k by using two Bragg beams. Results are analyzed by numerically solving the Gross-Pitaevskii (GP) equation for the order parameter of the condensate. This study shows that the response of the condensate to a Bragg pulse is indeed significantly affected by the radial degrees of freedom. By using Bragg pulses longer than in previous measurements, this multi-branch spectrum is resolved, finding good agreement with the predictions of Gross-Pitaevskii theory.
Author Davidson, N.
Katz, N.
Steihhauer, J.
Tozzo, C.
Ozeri, R.
Dalfovo, F.
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Snippet This paper presents Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates. The condensate consists of N=10/sup 5/...
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StartPage 185
SubjectTerms Atomic measurements
Equations
Frequency
Gases
Linear discriminant analysis
Physics
Pulse measurements
Scattering
Solids
Spectroscopy
Title Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates
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