Friday
Jan
17
2025
12:00 EST
Contact Info

Michael Filler

Rebecca Grieco

Location
Marcus Nanotechnology Building 1117-1118
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Systems Matter Seminar | Synthetic Gauge Potential and Synthetic Dimensions for Light

The Systems Matter Seminar Series brings experts in the areas of materials, devices, and processes together twice a month to share innovative research in those areas. The seminar series meets on the second and fourth Tuesday of each month during the academic year at noon in the Marcus Nanotechnology Building conference rooms (1116-1118).

Featuring Shanhui Fan, Joseph and Hon Mai Goodman Professor in the Stanford University School of Engineering

Abstract: The ability of control of flow of light is of central importance for modern technology. Photon, the particle of light, is a neutral particle. Thus, there is no natural gauge field that couples to photon. In this talk, we show that, in dynamically modulated photonic structures, the phase of the modulation corresponds to a gauge potential that couples to photons and breaks time-reversal symmetry for photon flow. By utilizing a modulated ring resonator structure that exhibits a synthetic frequency dimension, we experimentally demonstrate the observation of signatures of such a gauge potential in terms of a quantum Hall effect for light. Moreover, we experimentally demonstrate that a non-Abelian gauge field can be achieved in such modulated ring resonator structures. Our work highlights significant richness in time-modulated photonic structures for controlling the flow of light.  

 

Bio: Shanhui Fan is the Joseph and Hon Mai Goodman Professor in the School of Engineering, a Professor of Electrical Engineering, a Professor of Applied Physics (by courtesy), and a Senior Fellow of the Precourt Institute for Energy, at the Stanford University. He received his Ph. D in 1997 in theoretical condensed matter physics from the Massachusetts Institute of Technology (MIT). His research interests are in fundamental studies of nanophotonic structures, especially photonic crystals, plasmonic structures, and meta-materials, and applications of these structures in energy and information technology applications. He has published approximately 700 refereed journal articles, has given over 400 plenary/keynote/invited talks, and holds over 70 US patents. He is a co-founder of two companies aiming to commercialize high-speed engineering computations and radiative cooling technology respectively.  Prof. Fan received a National Science Foundation Career Award (2002), a David and Lucile Packard Fellowship in Science and Engineering (2003), the U. S. National Academy of Sciences W. O. Baker Award for Initiatives in Research (2007), the Adolph Lomb Medal from the Optical Society of America (2007), a Vannevar Bush Faculty Fellowship from the U. S. Department of Defense (2017), a Simons Investigator in Physics (2021), and the R. W. Wood Prize from the Optica (2022).  He is a member of the National Academy of Engineering,  and a Fellow of the IEEE, the American Physical Society, the Optica,  and the SPIE.