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Optical Metamaterials Based on Broken Symmetries

February 4, 2021 @ 12:00 pm 1:00 pm

Presented by:

Andrea Alù
Einstein Professor at the Photonics Initiative
Photonics Initiative, Advanced Science Research Center, City University of New York

In this talk, I discuss our recent research activity in nano-optics, polaritonics and electromagnetics, showing how suitably tailored meta-atomsand arrangements of them open exciting venues to realize new light phenomena and devices. I discuss venues to induce tunable diffraction-free wave propagation and topological phenomena based on lattice symmetries, to largely break Lorentz reciprocity and realize isolation without the need of magnetic bias based on broken time-reversal symmetry, and to induce enhanced light-matter interactions at exceptional points induced by parity-time symmetry. I also discuss how broken symmetries in space and space-time open the opportunity to induce topological order in metamaterials. In the talk, I will also discuss the impact of these concepts from basic science to practical technology.

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Meeting ID: 968 0277 5902

Passcode: 975440

Physics Department