2003/09/23 by D. Rychtarik, B. Engeser, Hanns‐Christoph Nägerl +3 · 8 citations
Computer Science · Physics and Astronomy · #Advanced Frequency and Time Standards #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.92.173003
published as Phys. Rev. Lett. 92, 173003 (2004)
arxiv created 2003/09/23 · openalex publication_date 2004/04/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report on the creation of a two-dimensional Bose-Einstein condensate of cesium atoms in a gravito-optical surface trap. The condensate is produced a few microm above a dielectric surface on an evanescent-wave atom mirror. After evaporative cooling by all-optical means, expansion measurements for the tightly confined vertical motion show energies well below the vibrational energy quantum. The presence of a condensate is observed in two independent ways by a magnetically induced collapse at negative scattering length and by measurements of the horizontal expansion.