2012/11/30 by Abraham J. Olson, Abraham Olson, Robert J. Niffenegger +2 · 1 citation
Computer Science · Physics and Astronomy · #Advanced Frequency and Time Standards #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #cond-mat.quant-gas #physics.atom-ph
paper · pdf · doi:10.1103/physreva.87.053613
published as Phys. Rev. A 87, 053613 (2013) · Update and corrections from version 2
arxiv created 2013/05/20 · openalex publication_date 2013/05/20 · arxiv updated 2013/05/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a combined computational and experimental study to optimize the efficiency of evaporative cooling for atoms in optical dipole traps. By employing a kinetic model of evaporation, we provide a strategy for determining the optimal relation between atom temperature, trap depth, and average trap frequency during evaporation given experimental initial conditions. We then experimentally implement a highly efficient evaporation process in an optical dipole trap, showing excellent agreement between the theory and experiment. This method has allowed the creation of pure Bose-Einstein condensates of 87Rb with 2\ifmmode×\else\texttimes\fi104 atoms starting from only 5\ifmmode×\else\texttimes\fi105 atoms initially loaded in the optical dipole trap, achieving an evaporation efficiency \ensuremathγeff of 4.0 during evaporation.