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X-ORIGINAL-URL:https://physics.uos.ac.kr/
X-WR-CALNAME:Department of Physics
X-WR-CALDESC:Department of Physics, University of Seoul
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UID:MEC-10c272d06794d3e5785d5e7c5356e9ff@physics.uos.ac.kr
DTSTART:20221125T160000Z
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DTSTAMP:20221122T053700Z
CREATED:20221122
LAST-MODIFIED:20221205
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Colloquium (2022.11.25.fri 16:00)
DESCRIPTION:Page 1 of 4«1234»Colloquium for the 1st semester of 2023 (10) : The quantum information/communication experiment Colloquium for the 1st semester of 2023 (9) : Quantum sensor Colloquium for the 1st semester of 2023 (8) : The Secret to the Popularity of American Physics Undergraduate Studies in Physics Colloquium for the 1st semester of 2023 (7) : Quantum optical semiconductors/Quantum light sources Colloquium for the 1st semester of 2023 (6) : Reedberg Atomic Quantum Computer Colloquium for the 1st semester of 2023 (5) : Phonon vibration modes in organic-inorganic hybrid perovskite materials Colloquium for the 1st semester of 2023 (4) : Synthesis and Twistronics Study on Single Crystal GE of hBN and Graphene Colloquium for the 1st semester of 2023 (3) : Diamond Qubit Colloquium for the 1st semester of 2023 (2) : Quantum nano-optics Colloquium for the 1st semester of 2023 (1) : Superconducting quantum computer id=”373″]id=”374″]\n\n제목 : Visualizing the Fractional Topological Order : From Fractional Chern Insulators to the Tao-Thouless State\n\n연사 : 박 권 박사(고등과학원)\n\nVisualizing the Fractional Topological Order\n\n: From Fractional Chern Insulators to the Tao-Thouless State\n\nKwon Park\n\nStrong correlation and topology are two main pillars of modern physics, which can be bridged by fractional quantum Hall states and their lattice analogues known as fractional Chern insulators. A particularly pressing question for fractional Chern insulators is if there exists a lattice analogue of the Laughlin state in the 1/3-filled Chern flat band dubbed as the Chern-Laughlin state and, if so, how to detect it experimentally. In this talk, I will show that the existence of an adiabatic path from the 1/3-filled fractional Chern insulator to the Tao-Thouless state, i.e., the root partition state of the Laughlin state in the thin torus limit, can serve as an effective order parameter for the precise identification of the Chern-Laughlin state. More importantly, unless the electron-electron interaction is strictly of the nearest-neighbor form, the Tao-Thouless state can be actually detected experimentally in an incommensurate double-walled carbon nanotube made out of the magic-angle twisted bilayer graphene, visualizing the fractional topological order. This method can be extended to various other fractional Chern insulators corresponding to both Abelian and non-Abelian fractional quantum Hall states.\n\n \n\n\n\n \n\nid=”376″]      
URL:https://physics.uos.ac.kr/colloquium/colloquium-2022-11-30-wed-360/
ORGANIZER;CN=Jung, Jeil:MAILTO:jeiljung@uos.ac.kr
CATEGORIES:Colloquium
LOCATION:University of Seoul
ATTACH;FMTTYPE=image/jpeg:https://physics.uos.ac.kr/wp-content/uploads/2022/11/physics-g8cf3d9fba_1920.jpg
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