Atomic Landau-Zener Tunneling in Fourier-Synthesized Optical Lattices
Journal Article
·
· Physical Review Letters
- Institut fuer Angewandte Physik, Universitaet Bonn, Wegelerstr. 8, D-53115 Bonn (Germany)
We report on an experimental study of quantum transport of atoms in variable periodic optical potentials. The band structure of both ratchet-type asymmetric and symmetric lattice potentials is explored. The variable atom potential is realized by superimposing a conventional standing wave potential of {lambda}/2 spatial periodicity with a fourth-order multiphoton potential of {lambda}/4 periodicity. We find that the Landau-Zener tunneling rate between the first and the second excited Bloch band depends critically on the relative phase between the two spatial lattice harmonics.
- OSTI ID:
- 21024400
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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