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学术报告:冯亮 教授 美国纽约州立大学
修改时间: 2015-07-25
报告题目:Parity-Time Photonic Synthetic Matters
报 告 人:冯亮 教授   美国纽约州立大学
报告时间:2015年6月24日上午10点
报告地点:物科楼101
Abstract:  Parity-time (PT) symmetry is a fundamental notion in quantum field theories and opens a new paradigm of non-Hermitian Hamiltonians ranging from quantum mechanics, electronics, to optics and photonics. By carefully exploiting the interplay between optical gain and loss in the complex dielectric permittivity plane, optics has become an ideal platform to study the fundamentals of PT symmetry. Instead of counteracting optical losses at micro and nano scales in integrated photonics, we started from an opposite viewpoint and developed a new paradigm of positively and strategically manipulating optical losses by the concept of PT symmetry to enrich fundamental optical physics and realized novel photonic synthetic matters with unique optical functionalities. Based on the state-of-the-art nanophotonics technology, we have demonstrated effective control of cavity resonant modes in a typical multi-mode laser cavity by PT symmetry breaking and unidirectional light transport at exceptional points.
Bio: Liang Feng is an Assistant Professor of Electrical Engineering at the State University of New York at Buffalo (SUNY Buffalo). He received his Ph.D. in Electrical Engineering from UCSD in 2010, and was subsequently a postdoc researcher in the Department of Electrical Engineering at California Institute of Technology and NSF Nanoscale Science and Technology Center at UC Berkeley. In January 2014, he joined the faculty at SUNY Buffalo. He has authored and coauthored 41 papers including Science, Nature Materials, Nature Photonics and PRL.
 
 
 

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