LMI Seminar: Optical Metamaterials Based on Broken Symmetries
Prof. Andrea Alù
Physics Program, Graduate Center, City University of New York
Time: Nov 18, 2020 03:00 PM Jerusalem
https://us02web.zoom.us/j/87315167585
Meeting ID: : 873 1516 7585
18 November 2020, 3:00
Abstract:
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In this talk, I discuss our recent research activity in nano-optics, polaritonics and electromagnetics, showing how suitably tailored meta-atoms and arrangements of them open exciting venues to realize new optical phenomena and devices for light. 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. |
