Enhanced laser cooling and state preparation in an optical lattice with a magnetic field
نویسندگان
چکیده
We demonstrate that weak magnetic fields can significantly enhance laser cooling and state preparation of Cs atoms in a one-dimensional optical lattice. A field parallel to the lattice axis increases the vibrational groundstate population of the stretched state um5F& to 28%. A transverse field reduces the kinetic temperature. Quantum Monte Carlo simulations agree with the experiment, and predict 45% ground-state population for optimal parallel and transverse fields. Our results show that coherent mixing and local energy relaxation play important roles in laser cooling of large-F atoms. @S1050-2947~98!50502-1#
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