Event

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. The use of metamaterials to enhance light-matter interaction in these 2D materials will also be presented [4, 5]. Finally, I will briefly talk about room temperature single photon emission from hexagonal boron nitride and the prospects of developing deterministic quantum emitters using them [6].

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] T. Galfsky, et al., Nano Lett. 16, 4940 (2015)
[5] T. Galfsky, et al. Proc. Natl. Acad. Sci. 114, 5125 (2017).
[6] N. Proscia, et al. Optica 5, 1128 (2018).

Bio: Vinod Menon is a Professor of Physics at the City College and Graduate Center of the City University of New York (CUNY). He is also an IEEE Distinguished Lecturer in Photonics (2018-19). He joined CUNY in fall 2004 as part of the initiative in photonics. Prior to joining CUNY he was at Princeton University (2001-2004) where he was the Lucent Bell Labs Post-Doctoral Fellow in Photonics. He received his MSc in Physics (Quantum Optics specialization) from the University of Hyderabad, India in 1995 and his Ph.D. in Physics from the University of Massachusetts in 2001. His current research interests include cavity QED with two-dimensional semiconductors, controlling transport and energetics in organic molecules through strong light-matter coupling, and engineered nonlinear optical materials. More details about his group can be found at www.lanmp.org