visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-10-07 13:30 
일시 Oct. 07 (Fri), 1:30 PM 
장소 E6-2. #1323(1st fl.) 
연사 Dr. Suk Bum Chung, IBS-CCES , Seoul National University 

“Symmetry and topology in transition metal dichalcogenide?”

 

Oct. 07 (Fri), 1:30 PM, E6-2. #1323(1st fl.)
Dr. Suk Bum Chung, IBS-CCES , Seoul National University

 

For the quantum well in an optical microcavity, the interplay of the Coulomb interaction and the electron-photon coupling can lead to the emergence of bosonic quasiparticles consisting of the exciton and the cavity photon known as polariton, which can form the Bose-Einstein condensate above a threshold density. Additional physics comes into play when the quantum well consists of the transition metal dichalcogenide (TMD). The TMD band structure in the low energy spectrum has two valley components with nontrivial Berry phase, which gives rise to a selection rule in the polariton coupling, e.g. the exciton from one (the other) valley can couple only to the clockwise (counter-clockwise) polarized photon. We find that, due to this nontrivial Berry phase, our polariton condensate spontaneously breaks the rotational symmetry and hence may be regarded as a phase of matter. We also investigate how the topology of the TMD polariton condensate is related the exciton symmetry.


Contact: MyungJoon Han, Physics Dept., (mj.han@kaist.ac.kr)

 

번호 날짜 장소 제목
405 2017-09-13 16:00  #1323 (E6-2. 1st fl.)  An Introduction to Quantum Spin Liquids file
404 2017-09-12 16:00  #1323 (E6-2. 1st fl.)  Exact Solution for the Interacting Kitaev Chain at Symmetric Point file
403 2023-12-08 10:30  E6-2, Rm#2502  Novel transport phenomena in insulators
402 2017-11-08 13:00  #5318 (E6-2. 5th fl.)  “Emergent exotic quasiparticles in quantum spin liquids” file
401 2020-09-22 09:30  Zoom webinar  Physics and applications of soliton microcombs(Quantum- & Nano-Photonics) file
400 2017-04-05 12:00  Room 101, Creative Learning Bldg.(E11)  2017년 4월 첫수 융합포럼 개최 안내(물리학과 & 원자력 및 양자공학과 공동 개최)/The First Wednesday Multidisciplinary Forum in April 2017 organized by Dept. of Physics & Dept. of Nuclear & Quantum Engineering file
399 2020-10-09 09:00  https://kaist.zoom.us/j/85161896513?pwd=U3pwWFFZaWVRamxDZUR5REhNeVk0UT09  Quantum Many-Body Simulation file
398 2023-11-08 10:00  E6-2,#2502 & zoom  [High Energy Theory seminar] The Vacuum Sector of Asymptotically Isometric Codes
397 2018-05-31 16:00  #1323, E6-2  Dynamic control of optical properties with gated-graphene metamaterials file
396 2023-05-17 16:30  Zoom  Detecting Hidden Photon Dark Matter via the Excitation of Qubits file
395 2023-02-20 16:00  Room 1323, KAIST Natural Sciences Lecture Hall(E6)  Physics of ferromagnet/superconductor junctions
394 2018-11-22 15:00  E6 Room(#1323)  Experimental and Computational Study on Physical Properties based on Granular System file
393 2021-02-17 09:00  Online  석학 대중 강연 및 강의 시리즈 file
392 2019-04-04 16:00  #1323, E6-2  Chiral spin-photon interaction at nanoscale file
391 2023-11-22 10:00  E6-2, #5301 & zoom  [High Energy Theory Seminar] Exact Quantum Algorithms to Recognize Quantum Phases of Matter
390 2019-05-24 16:00  #1323, E6-2  Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates file
389 2023-06-16 13:00  E6-2, #2502  Quantum critical states under extreme conditions
388 2019-12-05 16:00  #1323, E6-2  Subwavelenth Photonic Devices: From Single Photon Sources to Solar Cell file
387 2018-10-04 16:00  #1323, E6-2  Engineering light absorption in an ultrathin semiconductor metafilm file
386 2019-07-10 16:00  Academic Cltural Complex (E9) 5층 스카이라운지  Public Lectures file