In this talk, we will review our recent progress towards the concept, design and realization of magnet-free non-reciprocal photonic devices and arrays of them with strong topological protection, aimed at realizing reconfigurable, broadband isolators and circulators. We will discuss our approaches to design topological photonic metasurfaces based on spatio-temporal modulation, nonlinearities, and/or opto-mechanical interactions, and discuss our vision towards new transport phenomena for light, and new nanophotonic devices with enhanced non-reciprocal properties.
Andrea Alù, "Topological and non-reciprocal photonics (Conference Presentation)," Proc. SPIE 10345, Active Photonic Platforms IX, 103451T (Presented at SPIE Nanoscience + Engineering: August 09, 2017; Published: 22 September 2017); https://doi.org/10.1117/12.2273896.5583311706001.
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