Control of Interaction-Induced Dephasing of Bloch Oscillations

2007/10/26 by M. Gustavsson, Elmar Haller, E. Haller +7 · 11 citations
Computer Science · Physics and Astronomy · #Bloch equations #Bloch oscillations #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Dephasing #Electron #Mechanical and Optical Resonators #Nonlinear Dynamics and Pattern Formation #Physics #Quantum electrodynamics #Quantum mechanics #cond-mat.other

paper · pdf · doi:10.1103/physrevlett.100.080404

4 pages, 5 figures

arxiv created 2007/10/26 · openalex publication_date 2008/02/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We report on the control of interaction-induced dephasing of Bloch oscillations for an atomic Bose-Einstein condensate in an optical lattice. We quantify the dephasing in terms of the width of the quasimomentum distribution and measure its dependence on time for different interaction strengths which we control by means of a Feshbach resonance. For minimal interaction, the dephasing time is increased from a few to more than 20 thousand Bloch oscillation periods, allowing us to realize a BEC-based atom interferometer in the noninteracting limit.

Citations

• Sr<mml:mprescripts/><mml:none/>87Lattice Clock with Inaccuracy below10−15
• Nonlinear tight-binding approximation for Bose-Einstein condensates in a lattice
• Bloch Oscillations and Mean-Field Effects of Bose-Einstein Condensates in 1D Optical Lattices
• Tuning the Dipolar Interaction in Quantum Gases
• Cold atom clocks and applications
• Bloch oscillations of Bose-Einstein condensates: Breakdown and revival
• Bloch Oscillations of Ultracold Atoms: A Tool for a Metrological Determination ofh/mRb

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