Ising model in a light-induced quantized transverse field

Rohn J, Hörmann M, Genes C, Schmidt KP (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Research American Physical Society

Book Volume: 2

Journal Issue: 2

DOI: 10.1103/PhysRevResearch.2.023131

Abstract

We investigate the influence of light-matter interactions on correlated quantum matter by studying the paradigmatic Dicke-Ising model. This type of coupling to a confined, spatially delocalized bosonic light mode, such as provided by an optical resonator, resembles a quantized transverse magnetic field of tunable strength. As a consequence, the symmetry-broken magnetic state breaks down for strong enough light-matter interactions to a paramagnetic state. The nonlocal character of the bosonic mode can change the quantum phase transition in a drastic manner, which we analyze quantitatively for the simplest case of the Dicke-Ising chain geometry. The results show a direct transition between a magnetically ordered phase with zero photon density and a magnetically polarized phase with superradiant behavior of the light. Our predictions are equally valid for the dual quantized Ising chain in a conventional transverse magnetic field.

Authors with CRIS profile

Jonas Rohn Lehrstuhl für Theoretische Festkörperphysik Max Hörmann Lehrstuhl für Theoretische Physik Kai Phillip Schmidt Professur für Theoretische Physik

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light

Germany (DE)

How to cite

APA:

Rohn, J., Hörmann, M., Genes, C., & Schmidt, K.P. (2020). Ising model in a light-induced quantized transverse field. Physical Review Research, 2(2). https://doi.org/10.1103/PhysRevResearch.2.023131

MLA:

Rohn, Jonas, et al. "Ising model in a light-induced quantized transverse field." Physical Review Research 2.2 (2020).

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