Toward All-Dielectric Topological Photonics: Exploring the Geometry Effect of Honeycomb Lattice
Presented by Xiao Hu
International Center for Materials Nanoarchitectonics (WPI-MANA)
National Institute for Materials Science (NIMS), Tsukuba, Japan
Honeycomb lattice plays an extremely important role in the course of development of topology physics . Recently, we propose an all-dielectric topological photonic crystal derived from honeycomb structure. We identify a pseudo spin degree of freedom in electromagnetic modes hosted by honeycomb lattice, which can be explored for establishing topological EM states with time-reversal symmetry . We demonstrate theoretically the nontrivial topology by showing photonic band inversion, and counter-propagating edge EM wave. I will show the recent experimental confirmation of this idea with microwaves . Without requiring gyromagnetic, bi-anisotropic or piezo-magnetic materials, this topological photonic crystal can be fabricated easily and potentially is compatible to electronics. Finally I will discuss future perspective [4,5].
 H.-M. Weng, R. Yu, X. Hu, X. Dai and Z. Fang, Adv. Phys. vol. 64, 227 (2015)
 L.-H. Wu and X. Hu: Phys. Rev. Lett. vol. 114, 223901 (2015)
 Y.-T. Yang, J.-H. Jiang, X. Hu and Z.-H. Hang: arXiv.1610.07780
 L.-H. Wu and X. Hu: Sci. Rep. vol. 6, 24347 (2016)
 T. Kariyado and X. Hu: arXiv.1607.08706
11:00 am, Thursday, May 25, 2017
Room 190, Physics & Astronomy
Northeast corner of Lomas and Yale, Albuquerque, New Mexico
Individuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact Sandra Ortiz (phone: 505-277-5900, email: email@example.com) well in advance to ensure your needs are accomodated. Event handouts can be provided in alternative accessible formats upon request. Please contact Mrs. Ortiz if you need written information in an alternative format.
A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php