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Ab-initio Exciton-polaritons: Cavity control of Dark Excitons in two dimensional Materials

MPS-Authors
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Latini,  S.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

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Ronca,  E.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

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de Giovannini,  U.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Dipartimento di Fisica e Chimica, Universit́a degli Studi di Palerm;

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Hübener,  H.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;

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Rubio,  A.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science;
Center for Computational Quantum Physics (CCQ), The Flatiron Institute;

Fulltext (public)

1810.02672.pdf
(Preprint), 5MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Latini, S., Ronca, E., de Giovannini, U., Hübener, H., & Rubio, A. (2018). Ab-initio Exciton-polaritons: Cavity control of Dark Excitons in two dimensional Materials.


Cite as: http://hdl.handle.net/21.11116/0000-0002-5598-3
Abstract
We demonstrate a robust and efficient way of controlling the optical spectra of two-dimensional materials by embedding them in a quantum cavity. The strength of the cavity light-matter coupling leads to superposition of bright and dark excitons making viable the optical observation of dark excitons. Our theoretical calculations are based on a newly developed theoretical framework that involves the ab-initio solution of the coupled quantized electron-photon Schr\"odinger equation in a quantum-electrodynamics plus Bethe-Salpeter approach. It enables the simulations of exciton-polariton states and their dispersion in a strong cavity light-matter coupling regime. We then develop a general Mott-Wannier model for this excitonic-polariton cavity problem which can be readily applied to a wider range of applications of van-der-Waals heterostructure materials in cavities.