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Quantum non-equilibrium dynamics of Rydberg gases in the presence of dephasing noise of different strengths

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dc.affiliation.dptoUC3M. Departamento de Matemáticases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Interdisciplinar de Sistemas Complejos (GISC)es
dc.contributor.authorLevi, Emanuele
dc.contributor.authorGutiérrez Díez, Ricardo
dc.contributor.authorLesanovsky, Igor
dc.date.accessioned2021-02-22T10:03:20Z
dc.date.available2021-02-22T10:03:20Z
dc.date.issued2016-09-05
dc.description.abstractIn the presence of strong dephasing noise the dynamics of Rydberg gases becomes effectively classical, due to the rapid decay of quantum superpositions between atomic levels. Recently a great deal of attention has been devoted to the stochastic dynamics that emerges in that limit, revealing several interesting features, including kinetically constrained glassy behaviour, self-similarity and aggregation effects. However, the non-equilibrium physics of these systems, in particular in the regime where coherent and dissipative processes contribute on equal footing, is yet far from being understood. To explore this we study the dynamics of a small one-dimensional Rydberg lattice gas subject to dephasing noise by numerically integrating the quantum master equation. We interpolate between the coherent and the strongly dephased regime by defining a generalised concept of a blockade length. We find indications that the main features observed in the strongly dissipative limit persist when the dissipation is not strong enough to annihilate quantum coherences at the dynamically relevant time scales. These features include the existence of a time-dependent Rydberg blockade radius, and a growth of the density of excitations which is compatible with the power-law behaviour expected in the classical limit.en
dc.description.sponsorshipThe research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013) and ERC Grant Agreement No. 335266 (ESCQUMA), the EU-FET grant HAIRS, 612862 and from the University of Nottingham. Further funding was received through the H2020-FETPROACT-2014 Grant No. 640378 (RYSQ). We also acknowledge financial support from EPSRC Grant No. EP/J009776/1. Our work has benefited from the computational resources and assistance provided by the University of Nottingham High Performance Computing service.en
dc.format.extent8
dc.identifier.bibliographicCitationLevi, E., Gutiérrez, R., Lesanovsky, I. (2016). Quantum non-equilibrium dynamics of Rydberg gases in the presence of dephasing noise of different strengths. Journal of Physics B: Atomic, Molecular and Optical Physics, 49(18), 184003.en
dc.identifier.doihttps://doi.org/10.1088/0953-4075/49/18/184003
dc.identifier.issn0953-4075
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue18
dc.identifier.publicationlastpage8
dc.identifier.publicationtitleJournal of Physics B: Atomic, Molecular and Optical Physicsen
dc.identifier.publicationvolume49
dc.identifier.urihttps://hdl.handle.net/10016/31981
dc.identifier.uxxiAR/0000025266
dc.language.isoeng
dc.publisherIOP Science
dc.rights© 2016 IOP Publishing Ltden
dc.rights.accessRightsopen access
dc.subject.ecienciaMatemáticases
dc.subject.otherRydbergen
dc.subject.otherBlockadeen
dc.subject.otherNon-equilibriumen
dc.subject.otherDissipationen
dc.subject.otherDephasingen
dc.titleQuantum non-equilibrium dynamics of Rydberg gases in the presence of dephasing noise of different strengthsen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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