[Nbp] talk by Prof. Vinod Menon on "Strong light-matter interaction in van der Waals materials" on monday 15:00-16:00

[Timur Shegai]

Dear all,

it is a pleasure to invite you all to a talk by Prof. Vinod Menon from the City College of New York.

The talk will happen on Monday, April 8th in Kollektorn, 15:00-16:00.
Coffee and muffins will be served 15 minutes before the talk.

For PIs of the 2DTech center, please, ensure your group members attend the talk.
Prof. Menon. Also, feel free to forward this message to potentially interested colleagues.

Prof. Menon will be available for discussions on Monday, so if you're interested in meeting, please let me know.

The details of the talk are provided below:


Title: Strong light-matter interaction in van der Waals materials



Vinod Menon

Department of Physics, The City College of New York, 160 Convent Ave., NY 10031, USA

Physics Doctoral program, The Graduate Center of CUNY, 365 5th Ave, New York, NY 10016, USA

Email: vmenon at ccny.cuny.edu<mailto:vmenon at ccny.cuny.edu>, Web: https://lanmp.org/<https://urldefense.proofpoint.com/v2/url?u=https-3A__lanmp.org_&d=DwMGaQ&c=4NmamNZG3KTnUCoC6InoLJ6KV1tbVKrkZXHRwtIMGmo&r=HTj3EdZerXD7dFJ3STDg8X0f_3sx5PO07vYYcThiSNs&m=rwYSCgDIS70dbsb3StT2glXJ0PIgeB2uSpaitWInMje4X1G0WIu5nj_UnSAqbiFk&s=Ok--N0fwhx_JbmUfsq9BoBMWDkm9VaKEfB85YkmPtQ0&e=>



Strong light-matter interaction results in the formation of half-light half-matter quasiparticles called polaritons that take on the properties of both its constituents. In this talk, I will first introduce polariton formation in van der Waals (2D) materials and specifically, exciton-polaritons in 2D semiconductors [1]. Following this, we will discuss dipolar polaritons [2] to realize highly nonlinear interactions motivated by the need for single photon nonlinearity. In the second part of the talk we will discuss our recent work on magnetically correlated excitons in van der Waals magnets dressed by photons [3, 4]. The prospects for modifying magneto-optical response and controlling the interaction between excitons, photons and magnons will also be discussed. Time permitting, I will present some recent results on moiré excitons via substrate engineering.



[1] "Strong light–matter coupling in two-dimensional atomic crystals," X. Liu et al.  Nature Photonics vol. 9, p.30 (2015).

[2] "Highly nonlinear dipolar exciton-polaritons in bilayer MoS2," B. Datta et al., Nature Comm. vol. 13 p.6341 (2022).

[3] "Spin-correlated exciton–polaritons in a van der Waals magnet," F. Dirnberger at al. Nature Nanotechnology vol. 17, p.1060 (2022).

[4] "Magneto-optics in a van der Waals magnet tuned by self-hybridized polaritons," F. Dirnberger et al. Nature vol. 620, p.533 (2023).

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Bio:

Vinod Menon is a Professor of Physics at the City College of New York and doctoral faculty at the Graduate Center of the City University of New York (CUNY). He is a fellow of the Optical Society of America (now Optica), The American Physical Society (APS) and an IEEE Distinguished Lecturer in Photonics (2018-2020). 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 from the University of Hyderabad, India in 1995 and his Ph.D. in Physics from the University of Massachusetts in 2001. He has held visiting positions at MIT, Max Planck Institute for the Science of Light, and Princeton University. His current research interests include cavity QED with 2D materials and organic molecules, Hamiltonian simulators with light, and engineered nonlinear optical materials. More details about his group can be found at: https://lanmp.org/<https://urldefense.proofpoint.com/v2/url?u=https-3A__lanmp.org_&d=DwMGaQ&c=4NmamNZG3KTnUCoC6InoLJ6KV1tbVKrkZXHRwtIMGmo&r=HTj3EdZerXD7dFJ3STDg8X0f_3sx5PO07vYYcThiSNs&m=rwYSCgDIS70dbsb3StT2glXJ0PIgeB2uSpaitWInMje4X1G0WIu5nj_UnSAqbiFk&s=Ok--N0fwhx_JbmUfsq9BoBMWDkm9VaKEfB85YkmPtQ0&e=> .



All the best,
Timur

Timur O. Shegai,
Professor,
Department of Physics,
Chalmers University of Technology,
412 96, Göteborg,
Sweden
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