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)
467 2015-12-17 11:00    Wavefront engineering for in-vivo Deep brain imaging
466 2022-12-20 16:00    Studying Baryonic Flow Across the Cosmic Scales Using Radio and Millimeter Wavelength Experiments
465 2016-10-18 15:00    “Hybrid quantum systems with mechanical oscillators”
464 2016-07-08 14:00    Electronic quasiparticles in the quantum dimer model
463 2015-11-24 16:00    Topology-based understanding of spin dynamics in inhomogeneously magnetized systems
462 2022-04-01 16:00    High-field Electron Transport and Interaction Induced Phenomena in 2D Materials file
461 2018-11-29 16:00    양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file
460 2024-03-07 16:00    [CAPP seminars] Development of Superconducting Transition Edge Sensors at SRON file
459 2021-06-11 16:00    Pseudogap in surface-doped black phosphorus file
458 2016-11-11 13:30    Bandgap Engineering of Black Phosphorus
457 2016-04-01 14:30    Interference of single charged particles without a loop and dynamic nonlocality
456 2016-05-31 16:00    Understanding 3D tokamak physics towards advanced control of toroidal plasma
455 2023-07-18 11:00    Non-Hermitian Casimir Effect of Magnons
454 2024-06-13 16:00    Magnonic $\varphi$ Josephson junction and its non-Hermitian Josephson diode effect
453 2023-09-14 16:00    [CAPP seminar] Dark matter searches in Water Cherenkov Detectors file
452 2018-05-11 14:30    Disordered Floquet topological insulators file
451 2016-12-09 16:00    Shift Charge and Spin Photocurrents in Dirac Surface States of Topological Insulator
450 2022-05-13 14:30    Topological Superconducting Spintronics Towards Zero-Power Computing Technologies file
449 2021-07-29 14:00    Gravitationally Induced Dark Sector and Inflationary Dynamics file
448 2015-12-11 13:30    Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9