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
줌(link) : https://bit.ly/3ndIiJn
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
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
272 | Apr.19 (Fri.), 11:00 AM | #1323, E6-2 | Dr. Ji-Sang Park |
First-principles studies of semiconductors for solar cell applications
![]() |
271 | Jun. 11 (Fri.), 02:30 PM | Online seminar | Dr. Jin Woong Cha(KRISS) |
Engineering sound waves and vibrations in multi-mode nanomechanical systems
![]() |
270 | Sep. 27 (Fri.), 04:00 PM | E6-2. 1st fl. #1323 | Dr. Jindong Song |
0D/1D/2D/3D III-V materials grown by MBE for Optelectronics
![]() |
269 | Mar. 16 (Fri.), 02:30 PM | E6-2. 1st fl. #1323 | Dr. JinHee Kim |
산화물 다층박막에서의 다양한 물리현상
![]() |
268 | Dec. 8(Thu) 4p.m. | #1323(E6-2. 1st fl.) | Dr. Jinhyoung Lee, Hanyang University | Dynamical Resonance between Two Optical Cavities via Optomechanical Oscillator |
267 | Mar. 2nd (Thu), 4:00 p.m | #1323(E6-2. 1st fl.) | Dr. Jonathan Denlinger, Lawrence Berkeley National Lab | “Progress in the comparison of ARPES to DMFT for d and f strongly correlated electron systems” |
266 | December 3 (Tue.), 4:00 PM | #1323, E6-2 | Dr. Jong Mok Ok |
Toward Quantum Materials with Correlated Oxides
![]() |
265 | Apr. 01 (Fri.) 4:15 PM | E6-2. 1st fl. #1501 | Dr. JONG SOO LIM, KIAS | Cotunneling drag effect in Coulomb-coupled quantum dots |
264 | 2015/08/03,10:30AM | E6-2, #1323 (Seminar Room) | Dr. Jonghee Yoo (Fermi National Accelerator Laboratory, USA ) | Axion Search |
263 | Nov. 04 (Fri), 1:30 PM | E6-2. #1323(1st fl.) | Dr. Jonghyun Song, Department of Physics, Chungnam National University | Exotic phenomena at oxide LaAlO3/SrTiO3 hetero-interface and their applications |
262 | October 19 (Fri.), 10:00 AM | #1323, E6-2 | Dr. Jongsoo Yoo |
Energy conversion processes during magnetic reconnection in a laboratory plasma
![]() |
261 | Dec. 7 (Fri.), 04:00 PM | E6-2. 1st fl. #1323 | Dr. Joon Ho Jang |
Novel probes of interacting electrons in 2D systems
![]() |
260 | Sep. 27 (Fri.), 02:30 PM | E6-2. 1st fl. #1323 | Dr. Joon Sue Lee |
Spin-charge conversion in topological insulators for spintronic applications
![]() |
259 | Nov. 1 (Fri.), 04:00 PM | E6-2. 1st fl. #1323 | Dr. Ju-Jin Kim |
Electron transport through weak-bonded contact metal with low dimensional nano-material
![]() |
258 | July. 14 (Fri.), 3:00 PM | #1323 (E6-2. 1st fl.) | Dr. Jun Hyun Lee / University of Maryland |
Chiral anomaly in disordered Weyl semimetals
![]() |
257 | June 27 (Wed.), 13:30 PM | #1323, E6-2 | Dr. Jung Sik Park |
Magnetic reversal of artificial spin ice
![]() |
256 | 2015/12/17, 11:00AM | E4(KI Building), Matrix Hall (2nd fl.) | Dr. Jung-Hoon Park (Purdue University) | Wavefront engineering for in-vivo Deep brain imaging |
255 | Oct. 18 (Tue.), 3PM | E6-2. 1st fl. #1323 | Dr. JunHo Suh, Korea Research Institute of Standards and Science | “Hybrid quantum systems with mechanical oscillators” |
254 | Jul. 08 (Fri.) 2PM | #1323(E6-2. 1st fl.) | Dr. Junhyun Lee, Harvard University | Electronic quasiparticles in the quantum dimer model |
253 | 2015/11/24, 4PM | E6-2, #1323 | Dr. Kab-Jin Kim (Institute for Chemical Research, Kyoto University, Japan) | Topology-based understanding of spin dynamics in inhomogeneously magnetized systems |