visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2020-10-15 17:00 
연사  
장소 https://bit.ly/3ndIiJn 
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 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
545 2023-04-28 11:00    Tkachenko wave: From the modern field theory viewpoint
544 2018-10-18 10:00    Understanding membrane protein folding using single-molecule force techniques file
543 2023-07-19 16:00    [High-Energy Theory Seminar]Deriving the Simplest Gauge-String Duality
542 2023-03-02 11:00    Probing Anomalies of Non-Invertible Symmetries with Symmetry TFTs
541 2020-07-02 16:00    An irreversible qubit-photon coupling for the detection of itinerant microwave photons file
540 2015-08-04 11:00    Propagation of ultrasound through two- and three-dimensional strongly scattering media
539 2016-07-07 14:00    Let there be topological superconductors
538 2017-09-22 13:00    Superconductor-metal-insulator transition in thin Tantalum films file
537 2017-06-02 14:30    Quasiparticle Interference and Fourier transform scanning tunneling spectroscopy in WTe2 (Weyl semimetal) file
536 2016-05-24 16:00    Electronic and magnetic properties of 2D transition-metal thiophosphates and tunability of magnetic order with carrier density
535 2023-06-15 16:00    [CAPP Seminar] Cryogenic electronics for ion traps file
534 2023-06-14 16:00    [CAPP seminar] EMC at CERN file
533 2016-04-04 09:30    Radio frequency engineering
532 2016-11-1 10:30    Time scale dependent dynamics in InAs/InP quantum dot gain media
531 2018-10-25 16:00    Abelian and non-Abelian dark photons file
530 2024-08-14 11:00    Pair Density Waves and Supercurrent Diode Effect in Altermagnets
529 2017-09-22 16:00    Unexpected Electron-Pairing in Integer Quantum Hall Effect file
528 2017-09-22 14:30    Quantum Electronic Transport in Graphene Hybrid Nanostructures file
527 2024-05-14 16:00    [High Energy Theory Seminar] Minimal Production of Prompt Gravitational Waves during Reheating.
526 2018-12-07 14:30    Spin generation from heat and light in metals file