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  1. Annales de Physique
  2. 2008
  3. One-dimensional Bose gas on an atom chip
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2009
2008
One-dimensional Bose gas on an atom chip
Propriétés statiques et dynamiques d'un condensat de Bose-Einstein dans un potentiel aléatoire
Solid-state ring laser gyroscope
Cryogenic AFM-STM for mesoscopic physics
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DOI: 10.1209/0295-5075/81/56004 Bose-Einstein condensation on a superconducting atom chip (2008)

One-dimensional Bose gas on an atom chip

Content Provider EDP Sciences
Author A. H. van Amerongen
Abstract We describe experiments investigating the (coherence) properties of a finite-temperature one-dimensional (1D) Bose gas with repulsive interactions. The confining magnetic field is generated with a micro-electronic circuit. This microtrap for atoms or `atom chip' is particularly suited to generate a tight waveguide for atoms close to the chip surface. In contrast to the usual case of Bose-Einstein condensation in 3D, in 1D the system is not characterized by long-range phase coherence. Further interest in the 1D Bose gas stems from the fact that it forms the textbook example for the many-body quantum-mechanical systems that can be exactly solved using the Bethe Ansatz. Moreover, using a method developed by Yang and Yang, exact expressions for the thermodynamics of this system can be given. We summarize the theoretical background that is relevant to describe the (nearly) 1D gas in our experiments. The design and construction of our microtrap is described in some detail. We discuss the technique of Bose-gas focusing, in particular how it applies to our 1D system, and demonstrate that it can be used to probe the momentum distribution of the 1D gas. Finally, we perform a direct comparison of the measured in situ density distribution to the predictions of a model based on the exact Yang-Yang thermodynamics and find very good agreement.
Ending Page 94
Starting Page 1
Page Count 94
File Format HTM / HTML PDF
ISSN 00034169
Alternate Webpage(s) https://www.annphys.org/articles/anphys/abs/2008/02/ann032008/ann032008.html
e-ISSN 12864838
Issue Number 3
Journal Annales de Physique
Volume Number 33
DOI 10.1051/anphys/2009001
Language English
Publisher EDP Sciences
Publisher Date 2008-01-01
Access Restriction Subscribed
Rights Holder © EDP Sciences, 2009
Content Type Text
Resource Type Article
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