Mathematical Science Seminar 2017/18-S2 No.2



Dirac physics and topology in Photonics


The celebrated Dirac equation is not only the foundation of quantum field theory, but also the parent model of many later advances in physics. One of the key notion derived from Dirac equation is the band topology for electrons in various condensed matters. Recently this notion has been extended to bosonic systems, such as in photonics. I will briefly introduce the background, fundamental challenges and recent advances in the search of photonic topological materials. Band degeneracy and topology enriched by both point-group and nonsymmorphic symmetries in all dielectric photonic crystals are emphasized. Microscopic theory on the spin-orbit coupling, angular-momentum---wavevector locking are discussed in details.


Prof. Jian-Hua Jiang
Soochow University

Prof. Jian-Hua Jiang graduated from University of Science and Technology of China with B.S. and Ph.D on theoretical physics (condensed matter theory). Later he joined Weizmann Institute of Science in Israel as a postdoc fellow in the group of Prof. Yoseph Imry (Wolf prize laureate). In Weizmann Institute he worked on thermoelectric transport in mesoscopic systems and topological states of matter. Afterwards, he joined University of Toronto as a postdoc fellow with Prof. Sajeev John where he worked on photonic crystals. He started working as a principal investigator in Soochow University on 2015. His group focused on quantum transport in mesoscopic systems and topological phenomena in photonic crystals.