Live form New York: Programmable Quantum Materials

by Dmitri Basov

Columbia University

at Physics Colloquium

Mon, 07 Jun 2021, 16:10
Zoom

Abstract

Quantum materials offer particularly appealing opportunities for the implementation of on-demand quantum phases. This class of materials host interacting many-body electronic systems featuring an intricate interplay of topology, reduced dimensionality, and strong correlations that lead to the emergence of "quantum matter" exhibiting macroscopically observable quantum effects over a vast range of length and energy scales. Central to the nano-optical exploration of quantum materials is the notion of polaritons: hybrid light-matter modes that are omnipresent in polarizable media. Infrared nano-optics allows one to directly image polaritonic waves yielding rich insights into the electronic phenomena of the host material supporting polaritons. We utilized this novel general approach to investigate the physics of on-demand hyperbolic exciton-polaritons in a prototypical atomically layered van der Waals semiconductor WSe2 and of infrared non-reciprocity in a current carrying graphene device [3].

[1] D. N. Basov, Ana Asenjo-Garcia, P. J. Schuck, X. Zhu & Angel Rubio, “Polariton panorama” Nanophotonics 10, 549 (2021) https://infrared.cni.columbia.edu/research/polariton-panorama-2-2/
[2] A. J. Sternbach, S. Chae, S. Latini, A. A. Rikhter, Y. Shao, B. Li, D. Rhodes, B. Kim, P. J. Schuck, X. Xu, X.-Y. Zhu, R. D. Averitt, J. Hone, M. M. Fogler, A. Rubio, and D. N. Basov, “Programmable hyperbolic polaritons in van der Waals semiconductors” Science 371, 617 (2021).
[3] Y. Dong, L. Xiong, I.Y. Phinney, Z. Sun, R. Jing, A.S. McLeod, S. Zhang, S. Liu, F. L. Ruta, H. Gao, Z. Dong, R. Pan, J. H. Edgar, P. Jarillo-Herrero, L.S. Levitov, A.J. Millis, M. M. Fogler, D.A. Bandurin, D.N. Basov “Fizeau Drag in Graphene Plasmonics” to appear in Nature (2021); arXiv:2103.10831

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*** This colloquium is joint with all the universities in Israel. We invite you to log in at 16:00 for socializing. The talk itself will start at 16:10. ***

Created on 31-05-2021 by Kats, Yevgeny (katsye)
Updaded on 31-05-2021 by Kats, Yevgeny (katsye)