Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model

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Kaczmarczyk, J.; Weimer, H.; Lemeshko, M.: Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. In: New Journal of Physics 18 (2016), Nr. 9, 93042. DOI: http://dx.doi.org/10.1088/1367-2630/18/9/093042

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/752

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Sum total of downloads: 211




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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.
License of this version: CC BY 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2016
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 142 67.30%
2 image of flag of United States United States 20 9.48%
3 image of flag of China China 15 7.11%
4 image of flag of France France 7 3.32%
5 image of flag of Italy Italy 3 1.42%
6 image of flag of India India 3 1.42%
7 image of flag of Taiwan Taiwan 2 0.95%
8 image of flag of United Kingdom United Kingdom 2 0.95%
9 image of flag of Spain Spain 2 0.95%
10 image of flag of Hungary Hungary 1 0.47%
    other countries 14 6.64%

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