Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices

Periodically driven quantum systems are currently explored in view of realizing novel many-body phases of matter. This approach is particularly promising in gases of ultracold atoms, where sophisticated shaking protocols can be realized and interparticle interactions are well controlled. The combina...

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Autores principales:	K. Wintersperger, M. Bukov, J. Näger, S. Lellouch, E. Demler, U. Schneider, I. Bloch, N. Goldman, M. Aidelsburger
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2020
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/94e6e1c5dad84e4ca545bf456145fcd8
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spelling	oai:doaj.org-article:94e6e1c5dad84e4ca545bf456145fcd82021-12-02T13:20:29ZParametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices10.1103/PhysRevX.10.0110302160-3308https://doaj.org/article/94e6e1c5dad84e4ca545bf456145fcd82020-02-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.10.011030http://doi.org/10.1103/PhysRevX.10.011030https://doaj.org/toc/2160-3308Periodically driven quantum systems are currently explored in view of realizing novel many-body phases of matter. This approach is particularly promising in gases of ultracold atoms, where sophisticated shaking protocols can be realized and interparticle interactions are well controlled. The combination of interactions and time-periodic driving, however, often leads to uncontrollable heating and instabilities, potentially preventing practical applications of Floquet engineering in large many-body quantum systems. In this work, we experimentally identify the existence of parametric instabilities in weakly interacting Bose-Einstein condensates in strongly driven optical lattices through momentum-resolved measurements, in line with theoretical predictions. Parametric instabilities can trigger the destruction of weakly interacting Bose-Einstein condensates through the rapid growth of collective excitations, in particular in systems with weak harmonic confinement transverse to the lattice axis. Understanding the onset of parametric instabilities in driven quantum matter is crucial for determining optimal conditions for the engineering of modulation-induced many-body systems.K. WinterspergerM. BukovJ. NägerS. LellouchE. DemlerU. SchneiderI. BlochN. GoldmanM. AidelsburgerAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 10, Iss 1, p 011030 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 K. Wintersperger M. Bukov J. Näger S. Lellouch E. Demler U. Schneider I. Bloch N. Goldman M. Aidelsburger Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices
description	Periodically driven quantum systems are currently explored in view of realizing novel many-body phases of matter. This approach is particularly promising in gases of ultracold atoms, where sophisticated shaking protocols can be realized and interparticle interactions are well controlled. The combination of interactions and time-periodic driving, however, often leads to uncontrollable heating and instabilities, potentially preventing practical applications of Floquet engineering in large many-body quantum systems. In this work, we experimentally identify the existence of parametric instabilities in weakly interacting Bose-Einstein condensates in strongly driven optical lattices through momentum-resolved measurements, in line with theoretical predictions. Parametric instabilities can trigger the destruction of weakly interacting Bose-Einstein condensates through the rapid growth of collective excitations, in particular in systems with weak harmonic confinement transverse to the lattice axis. Understanding the onset of parametric instabilities in driven quantum matter is crucial for determining optimal conditions for the engineering of modulation-induced many-body systems.
format	article
author	K. Wintersperger M. Bukov J. Näger S. Lellouch E. Demler U. Schneider I. Bloch N. Goldman M. Aidelsburger
author_facet	K. Wintersperger M. Bukov J. Näger S. Lellouch E. Demler U. Schneider I. Bloch N. Goldman M. Aidelsburger
author_sort	K. Wintersperger
title	Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices
title_short	Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices
title_full	Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices
title_fullStr	Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices
title_full_unstemmed	Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices
title_sort	parametric instabilities of interacting bosons in periodically driven 1d optical lattices
publisher	American Physical Society
publishDate	2020
url	https://doaj.org/article/94e6e1c5dad84e4ca545bf456145fcd8
work_keys_str_mv	AT kwintersperger parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT mbukov parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT jnager parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT slellouch parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT edemler parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT uschneider parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT ibloch parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT ngoldman parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices AT maidelsburger parametricinstabilitiesofinteractingbosonsinperiodicallydriven1dopticallattices
_version_	1718393225208659968

Parametric Instabilities of Interacting Bosons in Periodically Driven 1D Optical Lattices

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