Room temperature chiral coupling of valley excitons with spin-momentum locked surface plasmons

Thibault Chervy, Stefano Azzini, Etienne Lorchat, Shaojun Wang, Yuri Gorodetski, James A. Hutchison, Stéphane Berciaud, Thomas W. Ebbesen, Cyriaque Genet

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

69 Citaten (Scopus)

Samenvatting

We demonstrate room temperature chiral coupling of valley excitons in a transition metal dichalcogenide monolayer with spin-momentum locked surface plasmons. At the onset of the strong coupling regime, we measure spin-selective excitation of directional flows of polaritons. Operating under such conditions, our platform yields surprisingly robust intervalley contrasts (ca. 40%) and coherence (ca. 5-8%) as opposed to their total absence for the uncoupled valley excitons at room temperature. These results open rich possibilities, easy to implement, in the context of chiral optical networks.

Originele taal-2Engels
Pagina's (van-tot)1281-1287
Aantal pagina's7
TijdschriftACS Photonics
Volume5
Nummer van het tijdschrift4
DOI's
StatusGepubliceerd - 18 apr 2018

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