Observation of photon-assisted tunneling in optical lattices

被引：212

作者：

Sias, C. ^{[1
]}

Lignier, H. ^{[1
]}

Singh, Y. P. ^{[1
]}

Zenesini, A. ^{[1
]}

Ciampini, D. ^{[1
,2
]}

Morsch, O. ^{[1
]}

Arimondo, E. ^{[1
,2
]}

机构：

[1] Univ Pisa, Dipartimento Fis E Fermi, CNR, INFM, I-56127 Pisa, Italy

[2] CNISM Unita Pisa, Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.100.040404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed tunneling suppression and photon-assisted tunneling of Bose-Einstein condensates in an optical lattice subjected to a constant force plus a sinusoidal shaking. For a sufficiently large constant force, the ground energy levels of the lattice are shifted out of resonance and tunneling is suppressed; when the shaking is switched on, the levels are coupled by low-frequency photons and tunneling resumes. Our results agree well with theoretical predictions and demonstrate the usefulness of optical lattices for studying solid-state phenomena.

引用

页数：4

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