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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
 
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 일시 장소 연사 제목
공지 2019/09/18 - 12/5  Seminar Room #1323  Prof. David Schuster and etc.  Fall 2019: Physics Seminar Serises
공지 2019/09/02 - 12/09  Seminar Room 1501  이호성 박사 (한국표준과학연구원) and etc.  Fall 2019: Physics Colloquium
274 October 16 (Wed), 4:00pm  #1323 (E6-2, 1st fl.)  Dr. Jaewon Song  Emergent black holes and monopoles from quantum fields file
273 October 16 (Tue.), 10:00 AM  #1323, E6-2  Dr. Won-Ki Cho  Capturing protein cluster dynamics and gene expression output in live cells file
» October 15, 5:00pm  https://bit.ly/3ndIiJn  Dr. Samuli Autti  Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file
271 October 15, 2020 (Thursday  CAPP Seminar Room #C303, Creation Hall (3F), KAIST Munji Campus  Prof. Gil-Ho Lee (POSTECH)  Graphene-based Josephson junction microwave bolometer file
270 October 15 (Tue.), 16:00 PM  #1323, E6-2  Prof. Pilkyung Moon  Moiré superlattices and graphene quasicrystal file
269 October 15 (Mon.), 16:00 PM  #1323, E6-2  Dr. Yongjoo Baek  Universal properties of macroscopic current-carrying systems file
268 October 11 (Thu.), 16:00 PM  #1323, E6-2  Prof. Joung-Real Ahn  Dirac electrons in a graphene quasicrystal file
267 Oct. 27th(Thu) 4PM  #1323(E6-2)  Dr. 이 강 희, KAIST, Mechnical Engineering  Terahertz Metal Optics
266 Oct. 25 (Fri), 15:00 ~  #1323, E6-2  Daesu Lee,Junwoo Son,MyungJoon Han ,Siheon Ryee,Eun-Gook Moon  Physics Seminar file
265 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”
264 Oct. 18 (Tue.), 1:30 PM  1st fl. #1323(E6-2)  Dr. Chan-Ho Yang, Department of Physics, KAIST  "Visualization of oxygen vacancy in motion and the interplay with electronic conduction"
263 Oct. 17th (Mon) 11:00 AM  #1323,(E6-2, 1st fl.)  Nguyen Quang Liem, Institute of Materials Science, VAST, Viettnam  IMS and examples of the studies on optoelectronic materials
262 Oct. 16 (Fri.), 04:00 PM  https://kaist.zoom.us/j/89198078609  Dr. Daesu Lee  Hidden room-temperature ferroelectricity in CaTiO3 revealed by a metastable octahedral rotation pattern file
261 Oct. 16 (Fri.), 02:30 PM  https://kaist.zoom.us/j/89198078609  Dr. Chulki Kim  Nanoscale magnetic resonance detection towards nano MRI file
260 Oct. 15, 4pm  (https://kaist.zoom.us/j/93997220310)  정현석 교수님 (SNU)  Towards resource-efficient and fault-tolerant quantum computation with nonclassical light
259 Oct. 12 (Fri.), 04:00 PM  E6-2. 1st fl. #1323  Dr. HyungWoo Lee  Direct observation of a two-dimensional hole gas at oxide interfaces file
258 Oct. 12 (Fri.), 02:30 PM  E6-2. 1st fl. #1323  Dr. Daniel Kyungdeock Park  Quantum Advantage in Learning Parity with Noise file
257 Oct. 10(Tue) 4PM  E6-2 #1323  김성웅 교수 (성균관대학교 에너지과학과)  Discovery of New 2D Materials with Diverse Physical Properties
256 Oct. 07 (Fri), 4:00 PM  E6-2. #1323(1st fl.)  Dr. Choong Hyun Kim,IBS-CCES, Seoul National University  “Tilt engineering of 4d and 5d transition metal oxides?”
255 Oct. 07 (Fri), 1:30 PM  E6-2. #1323(1st fl.)  Dr. Suk Bum Chung, IBS-CCES , Seoul National University  “Symmetry and topology in transition metal dichalcogenide?”