Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions

We induce strong nonlocal interactions in a 2D Fermi gas in an optical lattice using Rydberg dressing. The system is approximately described by a t-V model on a square lattice where the fermions experience isotropic nearest-neighbor interactions and are free to hop only along one direction. We measu...

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Autores principales:	Elmer Guardado-Sanchez, Benjamin M. Spar, Peter Schauss, Ron Belyansky, Jeremy T. Young, Przemyslaw Bienias, Alexey V. Gorshkov, Thomas Iadecola, Waseem S. Bakr
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/552d06ec37fe4920b4e75519485cd2d7
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id	oai:doaj.org-article:552d06ec37fe4920b4e75519485cd2d7
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spelling	oai:doaj.org-article:552d06ec37fe4920b4e75519485cd2d72021-12-02T15:55:24ZQuench Dynamics of a Fermi Gas with Strong Nonlocal Interactions10.1103/PhysRevX.11.0210362160-3308https://doaj.org/article/552d06ec37fe4920b4e75519485cd2d72021-05-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.021036http://doi.org/10.1103/PhysRevX.11.021036https://doaj.org/toc/2160-3308We induce strong nonlocal interactions in a 2D Fermi gas in an optical lattice using Rydberg dressing. The system is approximately described by a t-V model on a square lattice where the fermions experience isotropic nearest-neighbor interactions and are free to hop only along one direction. We measure the interactions using many-body Ramsey interferometry and study the lifetime of the gas in the presence of tunneling, finding that tunneling does not reduce the lifetime. To probe the interplay of nonlocal interactions with tunneling, we investigate the short-time-relaxation dynamics of charge-density waves in the gas. We find that strong nearest-neighbor interactions slow down the relaxation. Our work opens the door for quantum simulations of systems with strong nonlocal interactions such as extended Fermi-Hubbard models.Elmer Guardado-SanchezBenjamin M. SparPeter SchaussRon BelyanskyJeremy T. YoungPrzemyslaw BieniasAlexey V. GorshkovThomas IadecolaWaseem S. BakrAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 2, p 021036 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Elmer Guardado-Sanchez Benjamin M. Spar Peter Schauss Ron Belyansky Jeremy T. Young Przemyslaw Bienias Alexey V. Gorshkov Thomas Iadecola Waseem S. Bakr Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions
description	We induce strong nonlocal interactions in a 2D Fermi gas in an optical lattice using Rydberg dressing. The system is approximately described by a t-V model on a square lattice where the fermions experience isotropic nearest-neighbor interactions and are free to hop only along one direction. We measure the interactions using many-body Ramsey interferometry and study the lifetime of the gas in the presence of tunneling, finding that tunneling does not reduce the lifetime. To probe the interplay of nonlocal interactions with tunneling, we investigate the short-time-relaxation dynamics of charge-density waves in the gas. We find that strong nearest-neighbor interactions slow down the relaxation. Our work opens the door for quantum simulations of systems with strong nonlocal interactions such as extended Fermi-Hubbard models.
format	article
author	Elmer Guardado-Sanchez Benjamin M. Spar Peter Schauss Ron Belyansky Jeremy T. Young Przemyslaw Bienias Alexey V. Gorshkov Thomas Iadecola Waseem S. Bakr
author_facet	Elmer Guardado-Sanchez Benjamin M. Spar Peter Schauss Ron Belyansky Jeremy T. Young Przemyslaw Bienias Alexey V. Gorshkov Thomas Iadecola Waseem S. Bakr
author_sort	Elmer Guardado-Sanchez
title	Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions
title_short	Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions
title_full	Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions
title_fullStr	Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions
title_full_unstemmed	Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions
title_sort	quench dynamics of a fermi gas with strong nonlocal interactions
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/552d06ec37fe4920b4e75519485cd2d7
work_keys_str_mv	AT elmerguardadosanchez quenchdynamicsofafermigaswithstrongnonlocalinteractions AT benjaminmspar quenchdynamicsofafermigaswithstrongnonlocalinteractions AT peterschauss quenchdynamicsofafermigaswithstrongnonlocalinteractions AT ronbelyansky quenchdynamicsofafermigaswithstrongnonlocalinteractions AT jeremytyoung quenchdynamicsofafermigaswithstrongnonlocalinteractions AT przemyslawbienias quenchdynamicsofafermigaswithstrongnonlocalinteractions AT alexeyvgorshkov quenchdynamicsofafermigaswithstrongnonlocalinteractions AT thomasiadecola quenchdynamicsofafermigaswithstrongnonlocalinteractions AT waseemsbakr quenchdynamicsofafermigaswithstrongnonlocalinteractions
_version_	1718385391822700544

Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions

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