Seeing Topological Order in Time-of-Flight Measurements

被引：168

作者：

Alba, E. ^{[1
]}

Fernandez-Gonzalvo, X. ^{[1
]}

Mur-Petit, J. ^{[1
]}

Pachos, J. K. ^{[2
]}

Garcia-Ripoll, J. J. ^{[1
]}

机构：

[1] IFF CSIC, Inst Fis Fundamental, Madrid 28006, Spain

[2] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 23期

关键词：

OPTICAL LATTICES; MAGNETIC-FIELDS; NEUTRAL ATOMS;

D O I：

10.1103/PhysRevLett.107.235301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this Letter, we provide a general methodology to directly measure topological order in cold atom systems. As an application, we propose the realization of a characteristic topological model, introduced by Haldane, using optical lattices loaded with fermionic atoms in two internal states. We demonstrate that time-of-flight measurements directly reveal the topological order of the system in the form of momentum-space Skyrmions.

引用

页数：5

共 32 条

[1]

Alba E., ARXIV11073673

[2] A quantum gas microscope for detecting single atoms in a Hubbard-regime optical lattice [J].