visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2020-10-15 17:00 
일시 October 15, 5:00pm 
장소 https://bit.ly/3ndIiJn 
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 날짜 장소 제목
328 2021-05-17 17:00  Zoom webinar  Spin current generation and detection in uniaxial antiferromagnets file
327 2021-05-14 16:00  Online seminar  Spatial and temporal separation of environmental dephasing sources from solid-state quantum emitters file
326 2021-05-14 14:30  Online seminar  Electrically tunable spin valve effect in vertical van-der-Waals magnetic tunnel junctions file
325 2021-04-19 19:00  Zoom webinar  Evidence of Electrical Switching in Antiferromagnets and Coherent Spin Pumping file
324 2021-04-09 10:00  Zoom webinar  Integrated Lithium Niobate Photonics file
323 2021-04-02 16:00  Online(Zoom)  Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy
322 2021-04-02 14:30  Online(Zoom)  Quantum computing and entanglement generation using trapped ions and photons
321 2021-03-25 16:00  Online Seminar (Zoom)  Search for dark matter axion with Rydberg atoms file
320 2021-03-02 16:00  Online  Sensitive terahertz detection with graphene-based transistors file
319 2021-02-17 09:00  Online  석학 대중 강연 및 강의 시리즈 file
318 2021-02-15 17:00  Zoom  Magnetic Cluster Octupole Domain evolutation in chiral antiferromagnets file
317 2021-02-02 14:30  Zoom  Quantum- & Nano-Photonics 세미나(Integrated Nanophotonics with Metamaterials, Microcomb, and Atomic Systems) file
316 2021-01-28 18:00  Online Seminar  Quantum metamaterials: concept, theory, prototypes and possible applications file
315 2021-01-28 15:00  Zoom  Topological Transport of Deconfined Hedgehogs in Magnets file
314 2020-12-23 10:00  Online  Online workshop for Quantitative Phase Imaging file
313 2020-12-11 16:00  online  Atomic and electronic reconstruction at van der Waals interface in twisted 2D materials
312 2020-12-11 14:30  online  Antisymmetric interlayer exchange coupling in magnetic multilayers
311 2020-12-10 13:55  Zoom  Consistency of Boltzmann equation and light dark matter from inflaton decay
310 2020-12-09 10:00  Zoom  Searching for the QCD axion with the ARIADNE experiment file
309 2020-12-02 10:00  Zoom  Recent progress in Axion Dark Matter eXperiment (ADMX) technology file