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Nontrivial Topology Induced by Dynamic Modulations: From Gauge Potential to Synthetic Space
In recent years, there has been an emerging interest in exploring the concepts of synthetic dimension in photonics. These concepts enable one to explore physics in high-dimensional geometries using lower-dimensional physical structures. Since topology is intimately connected with the dimensionality of space, the concept of synthetic dimension is particularly attractive for demonstrating topological physics.

In this webinar hosted by the OSA Integrated Photonics Technical Group, Dr. Shanhui Fan of Stanford University Here will show that photonic systems provide particularly versatile mechanisms for realizing the concept of synthetic dimension. As a platform, we consider a ring resonator undergoing refractive index modulation, and exploit the modes of the ring resonator to form a synthetic lattice. In such a ring resonator, the phase of the modulation provides a gauge potential, allowing complex topological effects to be demonstrated. As examples of experimental demonstration, this webinar will present our recent works in measuring photonic band structures, and in demonstrating a quantum Hall ladder for photons, all in the synthetic dimensions.

What You Will Learn:
• Attendees will get an overview of topological photonics, which is a rapidly emerging topic, and will learn about recent theoretical and experiment work on the subject.

Who Should Attend:
• The webinar will be appropriate for various levels of expertise.

Feb 11, 2020 01:00 PM in Eastern Time (US and Canada)

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Shanhui Fan, Stanford University
Shanhui Fan is a Professor of Electrical Engineering, a Professor of Applied Physics (by courtesy), a Senior Fellow of the Precourt Institute for Energy, and the Director of the Edward L. Ginzton Laboratory at Stanford University. He received his PhD in 1997 in theoretical condensed matter physics from MIT. His research interests are in fundamental studies of solid state and photonic structures and devices, especially photonic crystals, plasmonics, and meta-materials. He has published over 500 journal articles, given over 350 talks, and granted 62 US patents. Prof. Fan received a NSF Career Award, a David and Lucile Packard Fellowship in Science and Engineering, the National Academy of Sciences W. O. Baker Award for Initiative in Research, the Adolph Lomb Medal from OSA, and a Vannevar Bush Faculty Fellowship from the US Dept. of Defense. He is a Thomson Reuters Highly Cited Researcher in Physics, a Fellow of IEEE, APS, OSA, and SPIE.