How Landau-Zener tunneling takes time

被引：70

作者：

Niu, Q ^{[1
]}

Raizen, MG ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.80.3491

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：3491 / 3494

页数：4

共 19 条

[1]

AO P, 1991, PHYS REV B, V44, P11495

[2]

Ashcroft N.W., 1976, Solid state physics Holt, Rinehart and Winston, Vfirst

[3] THE LIFETIME OF WANNIER LADDER STATES [J].