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A nonadiabatic semi-classical method for dynamics of atoms in optical lattices |
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| Authors: | S Jonsell C M Dion M Nylén S JH Petra P Sjölund A Kastberg |
| Institution: | 1. Department of Physics and Astronomy, Open University, Milton Keynes, MK7 6AA, UK 2. VP & RPTP Science College, Vallabh Vidyanagar, 388120, Gujarat, India 3. Department of Physics, Sardar Patel University, Vallabh Vidyanagar, 388120, Gujarat, India 4. PS Science College, Kadi (N.G.), 382715, Gujarat, India 5. Department of Environmental, Earth & Atmospheric Sciences, University of Massachusetts Lowell, 265 Riverside Street, Lowell, MA, 01854-5045, USA |
| Abstract: | We develop a semi-classical method to simulate the motion of atoms in a dissipative optical lattice. Our method treats the internal states of the atom quantum mechanically, including all nonadiabatic couplings, while position and momentum are treated as classical variables. We test our method in the one-dimensional case. Excellent agreement with fully quantum mechanical simulations is found. Our results are much more accurate than those of earlier semi-classical methods based on the adiabatic approximation. |
| Keywords: | 32 80 Pj Optical cooling of atoms trapping 03 65 Sq Semiclassical theories and applications |
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