Waveguide QED: Multichannel Interference for Fano-Feshbach Resonance

Professor Chang-Pu Sun

Beijing Computational Science Research Centre and Chinese Academy of Sciences, China

3:30 pm Friday, 26 July 2013, EN313, EN Building, Hawthorn.

Waveguide QED describes the strong coupling between a two (or more)-level system and an electromagnetic field confined in a waveguide with some transverse field modes which provide coherent transport of single photon with multiple channels for quantum interference. There will emerge dramatic quantum optics effects, such as Fano-Feshbach resonances in guiding modes. Using the two-level system as an active controller, the waveguide QED system can behave as a single-photon device (quantum switch or single transistor) for quantum information processing and quantum networks.
In this talk, first I will give a brief review of the fundamental quantum physics of waveguide QED and the resonance characteristics of single photon scattering due to the existence of multiple channels. I also show the approaches of quantum field theory and scattering theory, developed recently by my group, to predict novel quantum resonance effects in the waveguide QED.

About the Speaker - Chang-Pu Sun
Chang-Pu Sun received his Ph.D. degree in 1992 from Chern Institute of Mathematics at Nankai University. He is currently a Chair Professor of Physics at Beijing Computational Science Research Centre and an Academician of Chinese Academy of Sciences.
Professor Sun has made some significant contributions in the overlapping areas of quantum physics, and mathematical physics. Recently, he has contributed a series of novel research results on the foundation of quantum information and their physical implementations based solid state systems such as superconducting quantum circuit and nano-mechanical resonators. He has had over 260 papers published in peer-refereed journals, attracting over 5800 citations with an Hirsch index 41.

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