Robust and ultrafast state preparation by ramping artificial gauge potentials

dc.contributor.authorWang, Botao
dc.contributor.authorDong, Xiao-Yu
dc.contributor.authorÜnal, F Nur
dc.contributor.authorEckardt, André
dc.date.accessioned2022-03-09T07:55:38Z
dc.date.available2022-03-09T07:55:38Z
dc.date.issued2021-06-11
dc.date.updated2022-02-11T23:13:01Z
dc.description.abstractThe implementation of static artificial magnetic fields in ultracold atomic systems has become a powerful tool, e.g. for simulating quantum-Hall physics with charge-neutral atoms. Taking an interacting bosonic flux ladder as a minimal model, we investigate protocols for adiabatic state preparation via magnetic flux ramps. Considering the fact that it is actually the artificial vector potential (in the form of Peierls phases) that can be experimentally engineered in optical lattices, rather than the magnetic field, we find that the time required for adiabatic state preparation dramatically depends on which pattern of Peierls phases is used. This can be understood intuitively by noting that different patterns of time-dependent Peierls phases that all give rise to the same magnetic field ramp, generally lead to different artificial electric fields during the ramp. As an intriguing result, we find that an optimal choice allows for preparing the ground state almost instantaneously in the non-interacting system, which can be related to the concept of counterdiabatic driving. Remarkably, we find extremely short preparation times also in the strongly-interacting regime. Our findings open new possibilities for robust state preparation in atomic quantum simulators.en
dc.description.sponsorshipDFG, 277974659, FOR 2414: Artificial Gauge Fields and Interacting Topological Phases in Ultracold Atomsen
dc.identifier.eissn1367-2630
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/16512
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-15289
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc530 Physikde
dc.subject.otherartificial gauge fieldsen
dc.subject.otheradiabatic preparationen
dc.subject.otheroptical latticesen
dc.subject.othercold atomsen
dc.titleRobust and ultrafast state preparation by ramping artificial gauge potentialsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber063017en
dcterms.bibliographicCitation.doi10.1088/1367-2630/abf9b2en
dcterms.bibliographicCitation.issue6en
dcterms.bibliographicCitation.journaltitleNew Journal of Physicsen
dcterms.bibliographicCitation.originalpublishernameIOPen
dcterms.bibliographicCitation.originalpublisherplaceBristolen
dcterms.bibliographicCitation.volume23en
tub.accessrights.dnbfreeen
tub.affiliationFak. 2 Mathematik und Naturwissenschaften>Inst. Theoretische Physik>FG Quantennichtgleichgewichtsdynamikde
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Quantennichtgleichgewichtsdynamikde
tub.affiliation.instituteInst. Theoretische Physikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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