Details
| Original language | English |
|---|---|
| Article number | 093042 |
| Journal | New journal of physics |
| Volume | 18 |
| Issue number | 9 |
| Publication status | Published - 22 Sept 2016 |
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.
Keywords
- antiferromagnetic phase, dissipative preparation, Hubbard model, lattice fermion models, ultracold gases
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: New journal of physics, Vol. 18, No. 9, 093042, 22.09.2016.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model
AU - Kaczmarczyk, J.
AU - Weimer, H.
AU - Lemeshko, M.
PY - 2016/9/22
Y1 - 2016/9/22
N2 - 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.
AB - 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.
KW - antiferromagnetic phase
KW - dissipative preparation
KW - Hubbard model
KW - lattice fermion models
KW - ultracold gases
UR - http://www.scopus.com/inward/record.url?scp=84988703029&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/18/9/093042
DO - 10.1088/1367-2630/18/9/093042
M3 - Article
AN - SCOPUS:84988703029
VL - 18
JO - New journal of physics
JF - New journal of physics
SN - 1367-2630
IS - 9
M1 - 093042
ER -