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Materials Science and Engineering B

Quantum motion of atoms confined in an optical lattice

William D. Phillips

Published Aug 1, 1997• 2 citations
Publisher
DOI
10.1016/s0921-5107(97)00074-3

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We investigate the storage of atoms in an optical lattice, using light detuned up to 2 nm to the blue of an atomic transition. Argon atoms were laser cooled in the metastable state 1s5(J=2{1s}_{5}(J\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}21s5​(J=2) and optically pumped to the state 1s3(J=0{1s}_{3}(J\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}01s3​(J=0). Subsequently these atoms were confined to the nodes of a three-dimensional interference pattern and stored for up to 1 s. We resolved the bands of motion in the lattice using a time-of-flight technique, and observed band-dependent losses leading to the preparation of atoms in the motional ground band.