Cold atoms in non-abelian gauge potentials: From the hofstadter "moth" to lattice gauge theory

K. Osterloh, M. Baig, L. Santos, P. Zoller, M. Lewenstein

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362 Citations (Scopus)

Abstract

We demonstrate how to create artificial external non-Abelian gauge potentials acting on cold atoms in optical lattices. The method employs atoms with k internal states, and laser assisted state sensitive tunneling, described by unitary k×k matrices. The single-particle dynamics in the case of intense U(2) vector potentials lead to a generalized Hofstadter butterfly spectrum which shows a complex mothlike structure. We discuss the possibility to realize non-Abelian interferometry (Aharonov-Bohm effect) and to study many-body dynamics of ultracold matter in external lattice gauge fields. © 2005 The American Physical Society.
Original languageEnglish
Article number010403
JournalPhysical Review Letters
Volume95
DOIs
Publication statusPublished - 1 Jul 2005

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