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Coupling Identical one-dimensional Many-Body Localized Systems.

Accepted version
Peer-reviewed

Repository DOI


Type

Article

Change log

Authors

Bordia, Pranjal 
Lüschen, Henrik P 
Hodgman, Sean S 
Schreiber, Michael 
Bloch, Immanuel 

Abstract

We experimentally study the effects of coupling one-dimensional many-body localized systems with identical disorder. Using a gas of ultracold fermions in an optical lattice, we artificially prepare an initial charge density wave in an array of 1D tubes with quasirandom on-site disorder and monitor the subsequent dynamics over several thousand tunneling times. We find a strikingly different behavior between many-body localization and Anderson localization. While the noninteracting Anderson case remains localized, in the interacting case any coupling between the tubes leads to a delocalization of the entire system.

Description

Keywords

cond-mat.quant-gas, cond-mat.quant-gas, cond-mat.dis-nn, cond-mat.stat-mech, cond-mat.str-el, quant-ph

Journal Title

Phys Rev Lett

Conference Name

Journal ISSN

0031-9007
1079-7114

Volume Title

116

Publisher

American Physical Society (APS)
Sponsorship
We acknowledge financial support by the European Commision (UQUAM, AQuS) and the Nanosystems Initiative Munich (NIM).