Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters

Abstract We study the properties of Floquet prethermal states in two-dimensional Mott-insulating Hubbard clusters under continuous optical excitation. With exact-diagonalization simulations, we show that Floquet prethermal states emerge not only off resonance, but also for resonant excitation, provi...

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Autores principales:	Junichi Okamoto, Francesco Peronaci
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/022e805b9aad4e3bae3345f67687fb5f
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spelling	oai:doaj.org-article:022e805b9aad4e3bae3345f67687fb5f2021-12-02T14:58:47ZFloquet prethermalization and Rabi oscillations in optically excited Hubbard clusters10.1038/s41598-021-97104-x2045-2322https://doaj.org/article/022e805b9aad4e3bae3345f67687fb5f2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97104-xhttps://doaj.org/toc/2045-2322Abstract We study the properties of Floquet prethermal states in two-dimensional Mott-insulating Hubbard clusters under continuous optical excitation. With exact-diagonalization simulations, we show that Floquet prethermal states emerge not only off resonance, but also for resonant excitation, provided a small field amplitude. In the resonant case, the long-lived quasi-stationary Floquet states are characterized by Rabi oscillations of observables such as double occupation and kinetic energy. At stronger fields, thermalization to infinite temperature is observed. We provide explanations to these results by means of time-dependent perturbation theory. The main findings are substantiated by a finite-size analysis.Junichi OkamotoFrancesco PeronaciNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Junichi Okamoto Francesco Peronaci Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters
description	Abstract We study the properties of Floquet prethermal states in two-dimensional Mott-insulating Hubbard clusters under continuous optical excitation. With exact-diagonalization simulations, we show that Floquet prethermal states emerge not only off resonance, but also for resonant excitation, provided a small field amplitude. In the resonant case, the long-lived quasi-stationary Floquet states are characterized by Rabi oscillations of observables such as double occupation and kinetic energy. At stronger fields, thermalization to infinite temperature is observed. We provide explanations to these results by means of time-dependent perturbation theory. The main findings are substantiated by a finite-size analysis.
format	article
author	Junichi Okamoto Francesco Peronaci
author_facet	Junichi Okamoto Francesco Peronaci
author_sort	Junichi Okamoto
title	Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters
title_short	Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters
title_full	Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters
title_fullStr	Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters
title_full_unstemmed	Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters
title_sort	floquet prethermalization and rabi oscillations in optically excited hubbard clusters
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/022e805b9aad4e3bae3345f67687fb5f
work_keys_str_mv	AT junichiokamoto floquetprethermalizationandrabioscillationsinopticallyexcitedhubbardclusters AT francescoperonaci floquetprethermalizationandrabioscillationsinopticallyexcitedhubbardclusters
_version_	1718389242160218112

Floquet prethermalization and Rabi oscillations in optically excited Hubbard clusters

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