visual
visual
gogle

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

(광학분야 세미나) Non-Hermitian physics and non-Hermitian singularity

2022.08.29 14:06

admin 조회 수:195

날짜 2022-12-07 16:00 
일시 Dec. 7 (Wed.) 2022, 4:00PM 
장소 E6-2 #1323 
연사 유정완(기초과학연구원, Center for Theoretical Physics of Complex Systems 교수) 
* Title: Non-Hermitian physics and non-Hermitian singularity
 
* Speaker: Jung-Wan Ryu (IBS, Center for Theoretical Physics of Complex Systems)
 
* Date: 4pm, 7th December (Wednesday) (Note that the schedule has changed.)
 
* Place: E6 1323 (no zoom broadcasting)
 
Abstract: We will introduce non-Hermitian phenomena and non-Hermitian degeneracy, i.e., exceptional point (EP), which are ubiquitous in various physical systems. We will also discuss classifications of multiple arbitrary-order EPs by invoking the permutation group and its conjugacy classes [1]. We classify topological structures of Riemann surfaces generated by multiple states around multiple arbitrary-order EPs, using the permutation properties of stroboscopic encircling EPs. All possible permutations of products of holonomy matrices describing encircling a 2nd-order EP are revealed and classified into finite numbers of classes according to the topological structures of Riemann surfaces. Finally, the results are realized in non-Hermitian effective Hamiltonian based on Jordan normal forms and fully desymmetrized optical microcavities.
 
 [1] Jung-Wan Ryu, Jae-Ho Han, and Chang-Hwan Yi, Classification of multiple arbitrary-order non-Hermitian singularities, Phys. Rev. A 106, 012218 (2022).
목록
번호 날짜 장소 제목
공지 2022-11-25 11:00  E6-2 #1323  [Update 세미나영상](응집물리 세미나) DMFT+ NRG: From models to real materials, from local to nonlocal correlations
227 2022-10-26 10:00  E6-2 #2502  Replica Higher-Order Topology of Hofstadter Butterflies in Twisted Bilayer Graphene
226 2022-08-08 14:00  E6-2 #2502  Classical Shadow Tomography for Analog Quantum Simulators
225 2016-09-29 16:00  E6-2 #1323 (1st floor)  Large-scale Silicon Photonic MEMS Switches
224 2022-11-24 16:00  E6-2 #1323 & Zoom  Probing fundamental physics by mapping the mm and sub-mm sky
223 2023-01-12 14:40  E6-2 #1323  JILA 1D Wannier-Stark optical lattice clock file
222 2023-01-12 16:00  E6-2 #1323  Spin wavepackets in the Kagome ferromagnet Fe3Sn2: propagation and precursors
221 2023-01-11 16:00  E6-2 #1323  Non-abelian anyons and graph gauge theory on a superconducting processor, Eun-Ah Kim (Cornell University/Ewha Womans University)
220 2023-01-10 16:00  E6-2 #1323  Terahertz Spectroscopy of Quantum Materials, Jae Hoon Kim (Yonsei University)
219 2023-01-09 16:00  E6-2 #1323  Non-Hermitian Hopf-bundle Matter. Moon Jip Park (IBS-PCS)
218 2023-01-11 11:00  E6-2 #1323  Directly proving magnetoelastic coupling in a soft ferromagnet using Lorentz 4D-STEM file
217 2022-11-03 13:00  E6-2 #1323  [High-Energy Theory Seminar] Supersymmetric observables via Fermi-gas method
» 2022-12-07 16:00  E6-2 #1323  (광학분야 세미나) Non-Hermitian physics and non-Hermitian singularity
215 2022-11-17 16:00  E6-2 #1323  (광학분야 세미나) Ultrastructural and Spectroscopic Studies by Super-Resolution Fluorescence Microscopy
214 2022-11-03 16:00  E6-2 #1323  (광학분야 세미나) Single-photon emission from low-dimensional materials
213 2022-10-27 16:00  E6-2 #1323  (광학분야 세미나) Cavity optomechanical systems for quantum transduction
212 2022-10-13 16:00  E6-2 #1323  (광학분야 세미나) Ultrafast Optics for Ultra-Precision Metrology and Realization of Flexible/Stretchable Laser-Induced-Graphene Electronics
211 2022-09-29 16:00  E6-2 #1323  (광학분야 세미나) Ultrafast THz Field-Induced Nonlinear Optics
210 2022-09-22 16:00  E6-2 #1323  (광학분야 세미나) Quasi-particle-like optical vortices in magnetic materials
209 2022-12-09 11:00  E6-2 #1323  [Update 세미나영상](응집물리 세미나) Single-shot measurements of strongly-correlated artificial molecular levels in semiconductor quantum dots file
쓰기