Phase fluctuations in Bose-Einstein condensates

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • D. Hellweg
  • S. Dettmer
  • P. Ryytty
  • J. J. Arlt
  • W. Ertmer
  • K. Sengstock
  • D. S. Petrov
  • G. V. Shlyapnikov
  • H. Kreutzmann
  • L. Santos
  • M. Lewenstein

Organisationseinheiten

Externe Organisationen

  • Universität Hamburg
  • FOM Institute for Atomic and Molecular Physics - AMOLF
  • Russian Research Centre Kurchatov Institute
  • Sorbonne Université
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)781-789
Seitenumfang9
FachzeitschriftApplied Physics B: Lasers and Optics
Jahrgang73
Ausgabenummer8
PublikationsstatusVeröffentlicht - 23 Nov. 2001

Abstract

We demonstrate the existence of phase fluctuations in elongated Bose-Einstein condensates (BECs) and study the dependence of these fluctuations on the system parameters. A strong dependence on temperature, atom number, and trapping geometry is observed. Phase fluctuations directly affect the coherence properties of BECs. In particular, we observe instances where the phase-coherence length is significantly smaller than the condensate size. Our method of detecting phase fluctuations is based on their transformation into density modulations after ballistic expansion. An analytic theory describing this transformation is developed.

ASJC Scopus Sachgebiete

Zitieren

Phase fluctuations in Bose-Einstein condensates. / Hellweg, D.; Dettmer, S.; Ryytty, P. et al.
in: Applied Physics B: Lasers and Optics, Jahrgang 73, Nr. 8, 23.11.2001, S. 781-789.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Hellweg, D, Dettmer, S, Ryytty, P, Arlt, JJ, Ertmer, W, Sengstock, K, Petrov, DS, Shlyapnikov, GV, Kreutzmann, H, Santos, L & Lewenstein, M 2001, 'Phase fluctuations in Bose-Einstein condensates', Applied Physics B: Lasers and Optics, Jg. 73, Nr. 8, S. 781-789. https://doi.org/10.1007/s003400100747
Hellweg, D., Dettmer, S., Ryytty, P., Arlt, J. J., Ertmer, W., Sengstock, K., Petrov, D. S., Shlyapnikov, G. V., Kreutzmann, H., Santos, L., & Lewenstein, M. (2001). Phase fluctuations in Bose-Einstein condensates. Applied Physics B: Lasers and Optics, 73(8), 781-789. https://doi.org/10.1007/s003400100747
Hellweg D, Dettmer S, Ryytty P, Arlt JJ, Ertmer W, Sengstock K et al. Phase fluctuations in Bose-Einstein condensates. Applied Physics B: Lasers and Optics. 2001 Nov 23;73(8):781-789. doi: 10.1007/s003400100747
Hellweg, D. ; Dettmer, S. ; Ryytty, P. et al. / Phase fluctuations in Bose-Einstein condensates. in: Applied Physics B: Lasers and Optics. 2001 ; Jahrgang 73, Nr. 8. S. 781-789.
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T1 - Phase fluctuations in Bose-Einstein condensates

AU - Hellweg, D.

AU - Dettmer, S.

AU - Ryytty, P.

AU - Arlt, J. J.

AU - Ertmer, W.

AU - Sengstock, K.

AU - Petrov, D. S.

AU - Shlyapnikov, G. V.

AU - Kreutzmann, H.

AU - Santos, L.

AU - Lewenstein, M.

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EP - 789

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

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