How Landau-Zener Tunneling Takes Time
How Landau-Zener Tunneling Takes Time
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DOI:
10.1103/physrevlett.80.3491
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发表时间:
1998-04
影响因子:
8.6
通讯作者:
Q. Niu;M. Raizen
中科院分区:
文献类型:
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作者:
Q. Niu;M. Raizen
We calculate the time evolution of Landau-Zener tunneling for atoms in an accelerating optical lattice. Analytical expressions are obtained that are in good agreement with a recent observation of nonexponential decay. We identify new experimental regimes that show a crossover from strong coherent oscillations to exponential decay in the temporal evolution of the survival probability. We establish the time scale of this crossover, and make connection to a tunneling time of Zener breakdown.