Rohn J, Hörmann M, Genes C, Schmidt KP (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 2
Journal Issue: 2
DOI: 10.1103/PhysRevResearch.2.023131
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.
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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