Lattice Interferometer for Laser-Cooled Atoms
2009
We demonstrate an atom interferometer in which atoms are laser cooled into a 1D optical lattice, suddenly released, and later subjected to a pulsed optical lattice. For short pulses, a simple analytical theory predicts the signal. We investigate both short and longer pulses where the analytical theory fails. Longer pulses yield higher precision and larger signals, and we observe a coherent signal at times that can differ significantly from the expected echo time. The interferometer has potential for precision measurements of (Planck constant/2pi)/m{sub A}, and can probe the dynamics of atoms in an optical lattice.
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