Glassy dynamics due to a trajectory phase transition in dissipative Rydberg gases

dc.affiliation.dptoUC3M. Departamento de Matemáticases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Interdisciplinar de Sistemas Complejos (GISC)es
dc.contributor.authorGutiérrez Díez, Ricardo
dc.contributor.authorPérez Espigares, Carlos
dc.contributor.authorLesanovsky, Igor
dc.contributor.authorGarrahan, Juan P.
dc.contributor.funderEngineering and Physical Sciences Research Council (EPSRC)en
dc.contributor.funderEuropean Commissionen
dc.description.abstractThe physics of highly excited Rydberg atoms is governed by blockade or exclusion interactions that hinder the excitation of atoms in the proximity of a previously excited one. This leads to cooperative effects and a relaxation dynamics displaying space-time heterogeneity similar to what is observed in the relaxation of glass-forming systems. Here, we establish theoretically the existence of a glassy dynamical regime in an open Rydberg gas, associated with phase coexistence at a first-order transition in dynamical large deviation functions. This transition occurs between an active phase of low density in which dynamical processes take place on short timescales, and an inactive phase in which excited atoms are dense and the dynamics is highly arrested. We perform a numerically exact study and develop a mean-field approach that allows us to understand the mechanics of this phase transition. We show that radiative decay—which becomes experimentally relevant for long times—moves the system away from dynamical phase coexistence. Nevertheless, the dynamical phase transition persists and causes strong fluctuations in the observed dynamics.en
dc.description.sponsorshipWe thank Federico Carollo and Matteo Marcuzzi for insightful discussions. 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) / ERC Grant Agreement No. 335266 (ESCQUMA) and the EPSRC Grant No. EP/M014266/1. R.G. acknowledges the funding received from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 703683. I.L. gratefully acknowledges funding through the Royal Society Wolfson Research Merit Award. We are also grateful for access to the University of Nottingham High Performance Computing Facility, and for the computational resources and assistance provided by CRESCO, the super-computing center of ENEA in Portici, Italy.en
dc.identifier.bibliographicCitationPérez Espigares, C., Lesavonsky, I.. Garrahan, J. P. y Gutiérrez, R. (2018). Glassy dynamics due to a trajectory phase transition in dissipative Rydberg gases. Physical Review A, 98(2), 021804(R).en
dc.identifier.publicationtitlePhysical Review Aen
dc.publisherAmerican Physical Societyen
dc.rights© 2018 American Physical Society.en
dc.rights.accessRightsopen access
dc.titleGlassy dynamics due to a trajectory phase transition in dissipative Rydberg gasesen
dc.typeresearch article*
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