Journal
NATURE NANOTECHNOLOGY
Volume 13, Issue 10, Pages 906-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41565-018-0219-7
Keywords
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Funding
- NSERC Discovery Program
- NSERC SPG Grant Program
- Canada Research Chair in Hybrid and Molecular Photonics
- FQRNT PBEEE scholarship programme
- NSERC Discovery Grant
- National Science Foundation (NSF) under the EFRI 2-DARE programme [EFMA-1542863]
- ERC ElecOpteR [780757]
- mixed Quebec-Italy Sub-commission for Bilateral Collaboration
- [NSF-ECCS-1509551]
- European Research Council (ERC) [780757] Funding Source: European Research Council (ERC)
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1509551] Funding Source: National Science Foundation
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Atomically thin transition metal dichalcogenides (TMDs) possess a number of properties that make them attractive for realizing room-temperature polariton devices(1). An ideal platform for manipulating polariton fluids within monolayer TMDs is that of Bloch surface waves, which confine the electric field to a small volume near the surface of a dielectric mirrors(2-4). Here we demonstrate that monolayer tungsten disulfide can sustain Bloch surface wave polaritons (BSWPs) with a Rabi splitting of 43 meV and propagation lengths reaching 33 mu m. In addition, we show strong polariton-polariton nonlinearities within BSWPs, which manifest themselves as a reversible blueshift of the lower polariton resonance. Such nonlinearities are at the heart of polariton devicess(5-11) and have not yet been demonstrated in TMD polaritons. As a proof of concept, we use the nonlinearity to implement a nonlinear polariton source. Our results demonstrate that BSWPs using TMDs can support long-range propagation combined with strong nonlinearities, enabling potential applications in integrated optical processing and polaritonic circuits.
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