Observation of phase fluctuations in elongated bose-einstein condensates

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

Autoren

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

Organisationseinheiten

Externe Organisationen

  • FOM Institute for Atomic and Molecular Physics - AMOLF
  • Kurchatov Institute
  • École normale supérieure (Paris)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
FachzeitschriftPhysical review letters
Jahrgang87
Ausgabenummer16
PublikationsstatusVeröffentlicht - 1 Okt. 2001

Abstract

The occurrence of phase fluctuations due to thermal excitations in Bose-Einstein condensates (BECs) is studied for a variety of temperatures and trap geometries. We observe the statistical nature of the appearance of phase fluctuations and characterize the dependence of their average value on temperature, number of particles, and the trapping potential. We find pronounced phase fluctuations for condensates in very elongated traps in a broad temperature range. The results are of great importance for the realization of BEC in quasi-1D geometries, for matter wave interferometry with BECs, as well as for coherence properties of guided atom laser beams.

ASJC Scopus Sachgebiete

Zitieren

Observation of phase fluctuations in elongated bose-einstein condensates. / Dettmer, S.; Hellweg, D.; Ryytty, P. et al.
in: Physical review letters, Jahrgang 87, Nr. 16, 01.10.2001.

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

Dettmer, S, Hellweg, D, Ryytty, P, Arlt, JJ, Ertmer, W, Sengstock, K, Petrov, DS, Shlyapnikov, GV, Kreutzmann, H, Santos, L & Lewenstein, M 2001, 'Observation of phase fluctuations in elongated bose-einstein condensates', Physical review letters, Jg. 87, Nr. 16. https://doi.org/10.1103/PhysRevLett.87.160406, https://doi.org/10.15488/3274
Dettmer, S., Hellweg, D., Ryytty, P., Arlt, J. J., Ertmer, W., Sengstock, K., Petrov, D. S., Shlyapnikov, G. V., Kreutzmann, H., Santos, L., & Lewenstein, M. (2001). Observation of phase fluctuations in elongated bose-einstein condensates. Physical review letters, 87(16). https://doi.org/10.1103/PhysRevLett.87.160406, https://doi.org/10.15488/3274
Dettmer S, Hellweg D, Ryytty P, Arlt JJ, Ertmer W, Sengstock K et al. Observation of phase fluctuations in elongated bose-einstein condensates. Physical review letters. 2001 Okt 1;87(16). doi: 10.1103/PhysRevLett.87.160406, 10.15488/3274
Dettmer, S. ; Hellweg, D. ; Ryytty, P. et al. / Observation of phase fluctuations in elongated bose-einstein condensates. in: Physical review letters. 2001 ; Jahrgang 87, Nr. 16.
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AU - Dettmer, S.

AU - Hellweg, D.

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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AB - The occurrence of phase fluctuations due to thermal excitations in Bose-Einstein condensates (BECs) is studied for a variety of temperatures and trap geometries. We observe the statistical nature of the appearance of phase fluctuations and characterize the dependence of their average value on temperature, number of particles, and the trapping potential. We find pronounced phase fluctuations for condensates in very elongated traps in a broad temperature range. The results are of great importance for the realization of BEC in quasi-1D geometries, for matter wave interferometry with BECs, as well as for coherence properties of guided atom laser beams.

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