visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-05-26 16:00 
일시 4pm, 26th May 
장소 E6 1323 
연사 황민수 (Department of Physics, Korea University) 
* Title: Topological photonic devices
 
* Speaker: 황민수 (Department of Physics, Korea University)
 
* Date: 4pm, 26th May
 
* Place: E6 1323 (Available seats can be limited because of the COVID situation.)
 
* Abstract
Nanophotonics deals with a control of light at the nanoscale being closely connected with the rapid advances. Properly engineered nanostructures allow the subwavelength propagation of light and its strong confinement in nanowaveguides and nanocavities, making possible the field enhancement and lasing. Recent developments in the physics of photonic topological insulators (PTIs) and bound states in the continuum (BICs) allowed to advance the field of nanophotonics and introduce novel all-dielectric nanostructures and nanolasers empowered by topology and interference effects. Optical BICs have provided a useful way to suppress out-of-plane losses and enhance quality factor (Q factor) in an infinite periodic structure, as a result of destructive mode inference in the far field. The intrinsic topological nature of BICs enables strong optical responses or low-power operation to be achieved. Exploiting long-lived, spatially-confined BICs has emerged from the numerous approaches considered as a promising route to boost nanophotonic Q factors. Moreover, in photonic systems, light propagation without backscattering and defect/imperfection-immune operation has been pursued to develop an ideal light source. Such distinctive features are considered particularly important in nanophotonic devices that are sensitive to small perturbations. After a new branch of optics, called “photonic topological insulators”, appeared and grew rapidly, controlling the topological phases of photonic structures has emerged as a novel manipulation of light. Here, the operational mechanisms, optical characterizations, and practical applications of photonic crystals based on BICs and PTIs are outlined. Their scientific and engineering challenges and results are also discussed.
번호 날짜 장소 제목
공지 2022-10-24 16:00  E6 #1501(공동강의실)  Physics Colloquim(Fall 2022)
공지 2022-09-21 10:30  E6-1 #1501  [Update 세미나 영상] Distinguished Lecture 'The Magic of Moiré Quantum Matter' Prof. Pablo Jarillo-Herrero(Department of Physics, MIT)
공지 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
공지 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
공지 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions
공지 2022-09-22 11:00  E6-1 #1323  2022 가을학기 응집물리 및 광학 세미나 전체 일정
439 2017-08-16 16:00  #1322 (E6-2. 1st fl.)  Phonon-driven spin-Floquet valleytro-magnetism file
438 2017-03-24 16:00  #1323 (1st fl. E6-2)  Graphene based nano electronics and nano electromechanics; focusing on precise control of nano structures for studying accurate physical properties
437 2017-03-24 14:30  #1323 (1st fl. E6-2).  Topological Dynamics
436 2017-11-03 16:00  #1323 (1st fl., E6-2.)  Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file
435 2017-11-03 14:30  #1323 (1st fl., E6-2.)  Quantum Resistor-Capacitor Circuit with Majorana Edge States file
434 2016-06-14 15:00  #1323 (E6-2 1st fl.)  No-Insulation High Temperature Superconductor Magnet Technology for Compact, Reliable, and Low-Cost High Field DC Magnets
433 2019-10-31 10:00  #1323 (E6-2, 1st fl.)  Kondo meets Hubbard: Impurity physics for correlated lattices file
432 2019-10-29 16:00  #1323 (E6-2, 1st fl.)  Particles and Gravity via String Geometry file
431 2019-10-29 10:00  #1323 (E6-2, 1st fl.)  Unconventional Spin Transport in Quantum Materials file
430 2019-10-16 16:00  #1323 (E6-2, 1st fl.)  Emergent black holes and monopoles from quantum fields file
429 2018-04-11 16:00  #1323 (E6-2, 1st fl.)  Non-Gaussian states of multimode light generated via hybrid quantum information processing file
428 2018-04-11 13:30  #1323 (E6-2, 1st fl.)  Probing 3D Structure and Physical Properties of Materials at the Single-Atom Level file
427 2018-04-13 10:00  #1323 (E6-2, 1st fl.)  Quantum meets Mechanics: from Quantum Information to Fundamental Research file
426 2017-11-28 16:00  #1323 (E6-2. 1st fl.)  Physics after the lab and the desk: Your work in PRL file
425 2017-09-26 11:00  #1323 (E6-2. 1st fl.)  Time-resolved ARPES study of Dirac and topological materials
424 2017-09-13 16:00  #1323 (E6-2. 1st fl.)  An Introduction to Quantum Spin Liquids file
423 2017-09-12 16:00  #1323 (E6-2. 1st fl.)  Exact Solution for the Interacting Kitaev Chain at Symmetric Point file
422 2017-07-14 15:00  #1323 (E6-2. 1st fl.)  Chiral anomaly in disordered Weyl semimetals file
421 2017-06-02 16:00  #1323 (E6-2. 1st fl.)  Maxwell's demon in quantum wonderland file
420 2017-04-28 16:00  #1323 (E6-2. 1st fl.)  Carbon nanotubes coupled to superconducting impedance matching circuits