Multiphoton interband excitations of quantum gases in driven optical lattices

被引：72

作者：

Weinberg, M. ^{[1
]}

Oelschlaeger, C. ^{[1
]}

Straeter, C. ^{[2
]}

Prelle, S. ^{[1
]}

Eckardt, A. ^{[2
]}

Sengstock, K. ^{[1
,3
]}

Simonet, J. ^{[1
,3
]}

机构：

[1] Univ Hamburg, Inst Laserphys, D-22761 Hamburg, Germany

[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[3] Univ Hamburg, Zentrum Opt Quantentechnol, D-22761 Hamburg, Germany

来源：

PHYSICAL REVIEW A | 2015年 / 92卷 / 04期

关键词：

SUPERCONDUCTIVITY; ATOMS;

D O I：

10.1103/PhysRevA.92.043621

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the observation of multiphoton interband absorption processes for quantum gases in shaken light crystals. Periodic inertial forcing, induced by a spatial motion of the lattice potential, drives multiphoton interband excitations of up to the ninth order. The occurrence of such excitation features is systematically investigated with respect to the potential depth and the driving amplitude. Ab initio calculations of resonance positions as well as numerical evaluation of their strengths exhibit good agreement with experimental data. In addition our findings could make it possible to reach novel phases of quantum matter by tailoring appropriate driving schemes.

引用

页数：10

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