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VOLUME 98 (2013) | ISSUE 10 | PAGE 655
Velocity selective trapping of atoms in a frequency-modulated laser field
DOI: 10.7868/S0370274X13220013
Abstract
The wave function of a moderately cold atom in a stationary near-resonant standing light wave delocalizes very fast due to wave packet splitting. However, we show that frequency modulation of the field may suppress packet splitting for some atoms having specific velocities in a narrow range. These atoms remain localized in a small space for a long time. We propose that in a real experiment with cold atomic gas this effect may decrease the velocity distribution of atoms (the field traps the atoms with such specific velocities while all other atoms leave the field).