Abstract

Two-dimensional (2D) van der Waals materials have emerged as a very attractive class of optoelectronic material due to the unprecedented strength in its interaction with light. In this talk I will discuss approaches to enhance and control this interaction by integrating these 2D materials with microcavities, and metamaterials. I will first discuss the formation of strongly coupled half-light half matter quasiparticles (microcavity polaritons) [1] and their spin-optic control [2] in the 2D transition metal dichacogenide (TMD) systems. Following this I will discuss the formation of polaritons using excited states (Rydberg states) to enhance the nonlinear polariton interaction. Recent results on electrical control [3] and realization of a polariton LED based on 2D TMDs will also be presented. Finally, I will briefly talk about room temperature single photon emission from hexagonal boron nitride [4] and the prospects of developing deterministic quantum emitters using them [5].

References [1] X. Liu, et al., Nature Photonics 9, 30 (2015) [2] Z. Sun et al., Nature Photonics 11, 491 (2017) [3] B. Chakraborty et al. Nano Lett. 18, 6455 (2018) [4] Z. Shotan, et al., ACS Photonics 3, 2490 (2016) [5] N. Proscia, et al. Optica 5, 1128 (2018).