Resolved-Sideband Raman Cooling to the Ground State of an Optical Lattice
نویسندگان
چکیده
We trap neutral Cs atoms in a two-dimensional optical lattice and cool them close to the zero point of motion by resolved-sideband Raman cooling. Sideband cooling occurs via transitions between the vibrational manifolds associated with a pair of magnetic sublevels, and the required Raman coupling is provided by the lattice potential itself. We obtain mean vibrational excitations n̄x ø n̄y , 0.024, corresponding to a population .95% in the vibrational ground state. Atoms in the ground state of an optical lattice provide a new system in which to explore quantum state control and subrecoil laser cooling. [S0031-9007(98)06022-0]
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