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

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dc.contributor.author Levi, Emanuele
dc.contributor.author Gutiérrez Díez, Ricardo
dc.contributor.author Lesanovsky, Igor
dc.date.accessioned 2021-02-22T10:03:20Z
dc.date.available 2021-02-22T10:03:20Z
dc.date.issued 2016-09-05
dc.identifier.bibliographicCitation Levi, 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.
dc.identifier.issn 0953-4075
dc.identifier.uri http://hdl.handle.net/10016/31981
dc.description.abstract In 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.
dc.description.sponsorship The 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.
dc.format.extent 8
dc.language.iso eng
dc.publisher IOP Science
dc.rights © 2016 IOP Publishing Ltd
dc.subject.other Rydberg
dc.subject.other Blockade
dc.subject.other Non-equilibrium
dc.subject.other Dissipation
dc.subject.other Dephasing
dc.title Quantum non-equilibrium dynamics of Rydberg gases in the presence of dephasing noise of different strengths
dc.type article
dc.subject.eciencia Matemáticas
dc.identifier.doi https://doi.org/10.1088/0953-4075/49/18/184003
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 18
dc.identifier.publicationlastpage 8
dc.identifier.publicationtitle Journal of Physics B: Atomic, Molecular and Optical Physics
dc.identifier.publicationvolume 49
dc.identifier.uxxi AR/0000025266
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