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Colloquium: Dr. Daniel G. Suárez-Forero | UMD

In-Person PHYS 401


Physics : 401

Date & Time

February 21, 2024, 11:00 am12:00 pm


TITLE:  “Many-body physics and light-matter interaction in two-dimensional systems”

ABSTRACT: Combining light-matter interaction with strongly interacting particles in the many-body regime is at the base of some of the crucial phenomena of modern physics and it promises to endow optoelectronic systems with unprecedented capabilities [1]. hoton-mediated superconductivity, cavity fractional quantum Hall states, and light-induced Mott insulators are examples of the fundamentally new behavior that a system can present when the Coulomb interaction is combined with the light-matter interaction. Due to their unavoidably large number of degrees of freedom, these systems have required strong efforts from both theoretical and experimental approaches to be investigated. In this talk, I will discuss our experimental work on the study of correlated states in multi-particle 2D systems. I will focus on our recent results in many-body states hosted by two different platforms:

1. Chiral light-matter coupling on a 2D gas of particles in the quantum Hall regime when embedded in a semiconductor microcavity [2].

2. Transition metal dichalcogenide moiré lattices capable of forming Mott insulating states of Bose-Fermi mixtures [3].

Our experimental approaches are based on theoretical considerations, and they open new avenues for the optical study of Mott insulating states and the quantum Hall effect.

[1] J. Bloch, A. Cavalleri, V. Galitski, M. Hafezi and A. Rubio. Nature 606, 41–48 (2022)

[2] D. G. Suárez-Forero, D. W. Session, M. Jalali Mehrabad, P. Knüppel, S. Faelt, W. Wegscheider and M. Hafezi, Nature Photonics, 17, 912–916 (2023)

[3] B. Gao, D. G. Suárez-Forero, S. Sarkar, T.S. Huang, D. Session, M. Jalali Mehrabad, R. Ni, M. Xie, J. Vannucci, S. Mittal, K. Watanabe, T. Taniguchi, A. Imamoglu, Y. Zhou and M. Hafezi, arXiv:2304.09731.