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

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.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0002-5598-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-AA8D-E
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1810.02672.pdf (Preprint), 5MB
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 Creators:
Latini, S.1, 2, Author           
Ronca, E.1, 2, Author           
de Giovannini, U.1, 2, 3, Author           
Hübener, H.1, 2, Author           
Rubio, A.1, 2, 4, Author           
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2Center for Free Electron Laser Science, ou_persistent22              
3Dipartimento di Fisica e Chimica, Universit́a degli Studi di Palerm, ou_persistent22              
4Center for Computational Quantum Physics (CCQ), The Flatiron Institute, ou_persistent22              

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 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.

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Language(s): eng - English
 Dates: 2018-10-052018-10-05
 Publication Status: Published online
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 1810.02672
 Degree: -

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Project name : We are grateful for helpful discussions with Ch. Sch ̈afer, M. Sentef and M. Ruggenthaler. S. L. ac- knowledges support from the Alexander von Humboldt foundation. We further acknowledge financial support from the European Research Council(ERC-2015-AdG- 694097) and European Union H2020 program under GA no.676580 (NOMAD). The Flatiron Institute is a division of the Simons Foundation.
Grant ID : 676580
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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