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Epidemic dynamics in open quantum spin systems

Perez-Espigares, Carlos; Marcuzzi, Matteo; Gutierrez, Ricardo; Lesanovsky, Igor


Carlos Perez-Espigares

Ricardo Gutierrez


We explore the non-equilibrium evolution and stationary states of an open many-body system which displays epidemic spreading dynamics in a classical and a quantum regime. Our study is motivated by recent experiments conducted in strongly interacting gases of highly excited Rydberg atoms where the facilitated excitation of Rydberg states competes with radiative decay. These systems approximately implement open quantum versions of models for population dynamics or disease spreading where species can be in a healthy, infected or immune state. We show that in a two-dimensional lattice, depending on the dominance of either classical or quantum effects, the system may display a different kind of non-equilibrium phase transition. We moreover discuss the observability of our findings in laser driven Rydberg gases with particular focus on the role of long-range interactions.


Perez-Espigares, C., Marcuzzi, M., Gutierrez, R., & Lesanovsky, I. (2017). Epidemic dynamics in open quantum spin systems. Physical Review Letters, 119(14), 1-6.

Journal Article Type Article
Acceptance Date Sep 11, 2017
Publication Date Oct 4, 2017
Deposit Date Sep 14, 2017
Publicly Available Date Oct 4, 2017
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 119
Issue 14
Article Number 140401
Pages 1-6
Public URL
Publisher URL


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