Quench dynamics of a dissipative Rydberg gas in the classical and quantum regimes

Gribben, Dominic, Lesanovsky, Igor and Gutierrez, Ricardo (2018) Quench dynamics of a dissipative Rydberg gas in the classical and quantum regimes. Physical Review A, 97 (1). 011603-1-011603-7. ISSN 2469-9934

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Understanding the non-equilibrium behavior of quantum systems is a major goal of contemporary physics. Much research is currently focused on the dynamics of many-body systems in lowdimensional lattices following a quench, i.e., a sudden change of parameters. Already such a simple setting poses substantial theoretical challenges for the investigation of the real-time post-quench quantum dynamics. In classical many-body systems the Kolmogorov-Mehl-Johnson-Avrami model describes the phase transformation kinetics of a system that is quenched across a first order phase transition. Here we show that a similar approach can be applied for shedding light on the quench dynamics of an interacting gas of Rydberg atoms, which has become an important experimental platform for the investigation of quantum non-equilibrium effects. We are able to gain an analytic understanding of the time-evolution following a sudden quench from an initial state devoid of Rydberg atoms and identify strikingly different behaviors of the excitation growth in the classical and quantum regimes. Our approach allows us to describe quenches near a non-equilibrium phase transition and provides an approximate analytic solution deep in the quantum domain.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/906576
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1103/PhysRevA.97.011603
Depositing User: Lesanovsky, Igor
Date Deposited: 17 Jan 2018 14:59
Last Modified: 04 May 2020 19:27
URI: https://eprints.nottingham.ac.uk/id/eprint/49145

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