visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
장소 https://bit.ly/3ndIiJn 
일시 October 15, 5:00pm 
연사 Dr. Samuli Autti 
제목 : Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe
 
연사 : Dr. Samuli Autti
일시 : 5:00pm, October 15, 2020
 
초록 : Time crystals are a novel phase of condensed matter, characterised by continuous, repeating motion in their quantum ground state. In our experiments, we explore this new phase using magnetic quasiparticles in the superfluid universe of 3He: We observe the formation of a quantum time quasicrystal and its transformation to a superfluid time crystal – a time supersolid [1]. We then bring two superfluid time crystals to touch each other, and observe oscillating particle exchange between the time crystals – the AC Josephson effect [2]. These ground-breaking experiments substantiate the theoretical excursion started by F. Wilczek, and provide novel, magnetic building block for quantum devices and quantum information processing – potentially even at room temperature [3].
 
[1] S. Autti et al, PRL 120 (2018)
[2] S. Autti et al, Nature Materials (2020), https://doi.org/10.1038/s41563-020-0780-y 
[3] Kreil, A. J. E. et al. arXiv:1911.07802 (2019)
 
고맙습니다.
 
최형순 드림

 

번호 일시 장소 연사 제목
86 Nov. 1st (Tue), 10:30AM  #1323(E6-2 1st fl.)  Dr. Gadi Eisenstein, Technion  Time scale dependent dynamics in InAs/InP quantum dot gain media
85 Nov. 2(Tue) 04:00pm  자연과학동(E6-2) #1323  Sangjin Lee(IBS-CALDES)  Metrology of Band Topology via Resonant Inelastic X-ray Scattering file
84 Nov. 20 (Fri.), 02:30 PM  Online  Dr. Doohee Cho  Lumpy Cooper pairs in an iron-based superconductor
83 Nov. 20 (Fri.), 04:00 PM  Online  Dr. Dohun Kim  Coherent control of field gradient induced quantum dot spin qubits
82 Nov. 22th (Thur), 15:00  E6 Room(#1323)  Prof. Suprijadi Haryono  Experimental and Computational Study on Physical Properties based on Granular System file
81 NOV. 23 (Fri), 03:00 PM  E6-2. 2st fl. #2501  Prof. Sang-Jin Sin  Entanglement string and Spin Liquid with Holographic duality file
80 Nov. 24(Thu) 4p.m.  #1323(E6-2. 1st fl.)  Dr. Jai-Min Choi, Chonbuk National Univiersity  Harmonic oscillator physics with single atoms in a state-selective optical potential
79 Nov. 28 (Tue.), 4:00 PM  #1323 (E6-2. 1st fl.)  Samindranath Mitra, Editor at Physical Review Letters  Physics after the lab and the desk: Your work in PRL file
78 Nov. 29(Tue) 4p.m.  #1323(E6-2. 1st fl.)  Dr. SungBin Lee, KAIST  Symmetry Protected Kondo Metals and Their Phase Transitions
77 Nov. 3 (Fri.), 2:30 PM  #1323 (1st fl., E6-2.)  Dr. MinChul Lee(Department of Applied Physics, Kyung Hee Univ.)  Quantum Resistor-Capacitor Circuit with Majorana Edge States file
76 Nov. 3 (Fri.), 4:00 PM  #1323 (1st fl., E6-2.)  Dr. SungDae Ji (Max Planck POSTECH/Hshinchu Center (MPK))  Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file
75 Nov. 8 (Wed.), 1:00 PM  #5318 (E6-2. 5th fl.)  Prof. Y. Matsuda Department of Physics, Kyoto University  “Emergent exotic quasiparticles in quantum spin liquids” file
74 Nov. 9 (Fri.), 02:30 PM  E6-2. 1st fl. #1323  Dr. Pilkyung Moon  Moiré superlattices – from twisted bilayer graphene to quasicrystal file
73 Nov. 9 (Fri.), 04:00 PM  E6-2. 1st fl. #1323  Dr. Donghun Lee  Quantum sensing and imaging with diamond defect centers for nano-scale spin physics file
72 Nov.26(Thu), 04:00PM  Online(Zoom)  Myung-Ki Kim  2020 가을학기 광학분야 특별세미나(Light Engineering Beyond the Diffraction Limit)
71 November 1 (Thu.), 16:00 PM  #1323, E6-2  Dr. KyeoReh Lee  Direct holography from a single snapshot file
70 November 14 (Thu.), 16:00 PM  #1323, E6-2  Prof. Ji-Hun Kang  Semi-classical model of polariton propagation file
69 November 20 (Wed.), 4:00 PM  #5302, E6-2  Dr. Shigeyuki Ishida  Correlation between superconducting transition temperature and critical current density in irradiated iron-based superconductors file
68 November 21 (Wed.), 15:00 PM  #1323, E6-2  Prof. Seongshik Oh  Engineering topological quantum physics at the atomic scale file
67 November 28 (Thu.), 16:00 PM  #1323, E6-2  Prof. Kyung Taec Kim  Generation of coherent EUV emissions using ultrashort laser pulses file