optical lattice (wavelength 1064 nm). Efficient trapping is achieved by a lattice inversion
immediately after laser excitation using an electro-optic technique. The trapping efficiency is
probed via analysis of the trap-induced shift of the two-photon microwave transition 50 S→
51 S. The inversion technique allows us to reach a trapping efficiency of 90%. The
dependence of the efficiency on the timing of the lattice inversion and on the trap laser …