Quantum Quench in an Atomic One-Dimensional Ising Chain

被引：182

作者：

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

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

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

Lauber, K. ^{[1
,2
]}

Weinmann, P. ^{[1
,2
]}

Daley, A. J. ^{[3
]}

Naegerl, H-C. ^{[1
,2
]}

机构：

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

[2] Univ Innsbruck, Zentrum Quantenphys, A-6020 Innsbruck, Austria

[3] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 05期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

OPTICAL LATTICES; GASES; DYNAMICS; PHYSICS; CESIUM;

D O I：

10.1103/PhysRevLett.111.053003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study nonequilibrium dynamics for an ensemble of tilted one-dimensional atomic Bose-Hubbard chains after a sudden quench to the vicinity of the transition point of the Ising paramagnetic to antiferromagnetic quantum phase transition. The quench results in coherent oscillations for the orientation of effective Ising spins, detected via oscillations in the number of doubly occupied lattice sites. We characterize the quench by varying the system parameters. We report significant modification of the tunneling rate induced by interactions and show clear evidence for collective effects in the oscillatory response.

引用

页数：5

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