Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model

Kaczmarczyk, Jan and Weimer, Hendrik and Lemeshko, Mikhail P (2016) Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. New Journal of Physics, 18. Article number: 093042. ISSN 1367-2630

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Official URL: http://dx.doi.org/10.1088/1367-2630/18/9/093042

Abstract

The Fermi-Hubbard model is one of the key models of condensed matter physics, which holds a potential for explaining the mystery of high-temperature superconductivity. Recent progress in ultracold atoms in optical lattices has paved the way to studying the model's phase diagram using the tools of quantum simulation, which emerged as a promising alternative to the numerical calculations plagued by the infamous sign problem. However, the temperatures achieved using elaborate laser cooling protocols so far have been too high to show the appearance of antiferromagnetic (AF) and superconducting quantum phases directly. In this work, we demonstrate that using the machinery of dissipative quantum state engineering, one can observe the emergence of the AF order in the Fermi-Hubbard model with fermions in optical lattices. The core of the approach is to add incoherent laser scattering in such a way that the AF state emerges as the dark state of the driven-dissipative dynamics. The proposed controlled dissipation channels described in this work are straightforward to add to already existing experimental setups.

Item Type: Article
DOI: 10.1088/1367-2630/18/9/093042
Subjects: 500 Science > 530 Physics
Research Group: Lemeshko Group
SWORD Depositor: Sword Import User
Depositing User: Sword Import User
Date Deposited: 09 Nov 2016 15:07
Last Modified: 05 Sep 2017 09:11
URI: https://repository.ist.ac.at/id/eprint/655

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