Extended Bose-Hubbard models with ultracold magnetic atoms

被引：276

作者：

Baier, S. ^{[1
]}

Mark, M. J. ^{[1
,2
]}

Petter, D. ^{[1
]}

Aikawa, K. ^{[1
,4
]}

Chomaz, L. ^{[1
,2
]}

Cai, Z. ^{[2
]}

Baranov, M. ^{[2
]}

Zoller, P. ^{[2
,3
]}

Ferlaino, F. ^{[1
,2
]}

机构：

[1] Univ Innsbruck, Inst Expt Phys, Technikerstr 25, A-6020 Innsbruck, Austria

[2] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, A-6020 Innsbruck, Austria

[3] Univ Innsbruck, Inst Theoret Phys, Technikerstr 21A, A-6020 Innsbruck, Austria

[4] Tokyo Inst Technol, Dept Phys, Grad Sch Sci & Engn, Meguro Ku, Tokyo 1528550, Japan

来源：

SCIENCE | 2016年 / 352卷 / 6282期

基金：

奥地利科学基金会; 欧洲研究理事会;

关键词：

MOTT-INSULATOR; QUANTUM; TRANSITION; SUPERFLUID; GAS;

D O I：

10.1126/science.aac9812

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The Hubbard model underlies our understanding of strongly correlated materials. Whereas its standard form only comprises interactions between particles at the same lattice site, extending it to encompass long-range interactions is predicted to profoundly alter the quantum behavior of the system. We realize the extended Bose-Hubbard model for an ultracold gas of strongly magnetic erbium atoms in a three-dimensional optical lattice. Controlling the orientation of the atomic dipoles, we reveal the anisotropic character of the onsite interaction and hopping dynamics and their influence on the superfluid-to-Mott insulator quantum phase transition. Moreover, we observe nearest-neighbor interactions, a genuine consequence of the long-range nature of dipolar interactions. Our results lay the groundwork for future studies of exotic many-body quantum phases.

引用

页码：201 / 205

页数：5

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