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)
485 2021-06-11 14:30    Engineering sound waves and vibrations in multi-mode nanomechanical systems file
484 2019-09-27 16:00    0D/1D/2D/3D III-V materials grown by MBE for Optelectronics file
483 2018-03-16 14:30    산화물 다층박막에서의 다양한 물리현상 file
482 2018-03-16 14:30    산화물 다층박막에서의 다양한 물리현상 file
481 2016-12-8 16:00    Dynamical Resonance between Two Optical Cavities via Optomechanical Oscillator
480 2023-05-22 13:00    Design & Development of Electrochemical Biosensors for the Detection of T2DM Biomarkers
479 2017-03-02 16:00    “Progress in the comparison of ARPES to DMFT for d and f strongly correlated electron systems”
478 2019-12-03 16:00    Toward Quantum Materials with Correlated Oxides file
477 2016-04-01 16:15    Cotunneling drag effect in Coulomb-coupled quantum dots
476 2015-08-03 10:30    Axion Search
475 2016-11-04 13:30    Exotic phenomena at oxide LaAlO3/SrTiO3 hetero-interface and their applications
474 2018-10-19 10:00    Energy conversion processes during magnetic reconnection in a laboratory plasma file
473 2018-12-07 16:00    Novel probes of interacting electrons in 2D systems file
472 2019-09-27 14:30    Spin-charge conversion in topological insulators for spintronic applications file
471 2022-11-04 16:30    초세대 협업연구실 Quantum- & Nano-Photonics_Multifunctional neural probes with integrated nanophotonics file
470 2019-11-01 16:00    Electron transport through weak-bonded contact metal with low dimensional nano-material file
469 2024-06-12 13:30    Competition between superconductivity and density waves in spin-degenerate and spin-orbit-coupled Bernal bilayer graphene
468 2017-07-14 15:00    Chiral anomaly in disordered Weyl semimetals file
467 2018-07-27 13:30    Magnetic reversal of artificial spin ice file
466 2018-07-27 13:30    Magnetic reversal of artificial spin ice file