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Dynamic Photonic Structures: Non-Reciprocity, Gauge Potential, and Synthetic Dimensions

Speaker

Fan Shanhui, Stanford University

Time

2018.11.13 16:00-17:00

Venue

Room 111, Physics Building

Abstract

We show that dynamic photonic structures, where refractive index of the structure is modulated as a function of time, offers a wide ranges of possibilities for exploration of physics and applications of light. In particular, dynamic photonic structures naturally break reciprocity. With proper design such photonic structure can then be used to achieve complete optical isolation and to completely reproduce magneto-optical effects without the use of gyrotropic materials. Moreover, the phase of the modulation corresponds to an effective magnetic gauge potential for photons, through which one can explore a wide variety of fundamental physics effects of synthetic magnetic field using photons. Finally, such dynamic photonic structure can be used to explore physics, especially topological physics, in dimensions that are higher than the physical dimension of the structure, leading to intriguing possibilities in manipulation of the frequencies of light in non-trivial ways.