In this talk we will discuss our recent work on electrical and optical control of strongly-coupled exciton-polaritons in two-dimensional Van der Waals materials. The possibility to optically address the valley degree of freedom of polariton states via optical excitation will be discussed [1]. Following this we will discuss the modulation of coupling strength between excitons and photons in a microcavity via electric field [2]. The possibility to enhance the nonlinear optical response of the polariton states by exploiting the higher order Rydberg states will also be presented. Finally, we will discuss the realization of room temperature quantum emitter array using strain engineered hexagonal boron nitride and coupling them to high quality factor resonators [3].
[1] Optical control of room temperature valley polaritons, Z. Sun, et al., Nature Photonics 11, 491 (2017).
[2] Control of strong light-matter interaction in monolayer WS2 through electric field gating, B. Chakraborty et al., Nano. Lett. (2018) DOI: 10.1021/acs.nanolett.8b02932
[3] Near-deterministic activation of room temperature quantum emitters in hexagonal boron nitride, N. Proscia et al. Optica (In Press) [ArXiv: 1712.01352 ]
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