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 |
---|---|---|---|---|
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 |
265 | April 6, 2017 (Thu), 4:00 pm | IBS CAPP seminar room, Creation Hall (3F), KAIST Munji Campus | Prof. Youngjoon Kwon (Yonsei University) | For whom the Belle tolls |
264 | 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
![]() |
263 | Oct. 16 (Fri.), 02:30 PM | https://kaist.zoom.us/j/89198078609 | Dr. Chulki Kim |
Nanoscale magnetic resonance detection towards nano MRI
![]() |
262 | Oct 9 (Fri), 09:00 AM | https://kaist.zoom.us/j/85161896513?pwd=U3pwWFFZaWVRamxDZUR5REhNeVk0UT09 | Prof. Tim Hsieh (Perimeter Institute) |
Quantum Many-Body Simulation
![]() |
» | October 15, 5:00pm | https://bit.ly/3ndIiJn | Dr. Samuli Autti |
Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe
![]() |
260 | May 13 (Fri.), 1:30 PM | E6. #1501(1st fl.) | Dr. Young-Woo Son, Dept. of Physics, KIAS | Aperiodic crystals in low dimensions |
259 | May 13 (Fri.) 4 PM | E6. #1501(1st fl.) | Dr. Hosub Jin, Dept. of Physics, UNIST | Graphene analogue in (111)- BaBiO3 bilayer heterostructures for topological electronics |
258 | 2018. 6. 22 10:00am ~ 11:50am | E6-6, Lecture Room 119 (1F) | Prof. Sang Bok Lee, Dept. of Chemistry and Biochemistry, Univ. of Maryland |
Success in Research Career
![]() |
257 | February 13th (Thur.), 16:30 PM | E6-6, #119 | Dr. Seyoon Kim(University of Wisconsin-Madison) |
Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures
![]() |
256 | Apr. 08 (Fri.), 4:00 PM | E6-2. 5st fl. #1501 | Dr. Changyoung Kim, SEOUL NATIONAL UNIV. | Spectroscopic studies of iron-based superconductors : what have we learned? |
255 | May. 3 (Fri), 11:00 AM | E6-2. 2st fl. #2502 | Prof. Changhee Sohn |
Exotic Magnetism
![]() |
254 | Sep. 4 (Tue), 02:30 PM | E6-2. 2st fl. #2502 | Dr. Changmin Lee, MIT |
Ultrafast time- and angle-resolved photoemission spectroscopy (tr-ARPES) with extreme ultraviolet laser pulses
![]() |
253 | MAR. 26 (TUE), 0300 PM | E6-2. 2st fl. #2501 | Prof. Jung Hoon Han |
Consideration of thermal Hall effect in frustrated and un-frustrated quantum magnets
![]() |
252 | NOV. 23 (Fri), 03:00 PM | E6-2. 2st fl. #2501 | Prof. Sang-Jin Sin |
Entanglement string and Spin Liquid with Holographic duality
![]() |
251 | JAN. 7 (Mon), 03:00 PM | E6-2. 2st fl. #2501 | Dr. Byoung min Kang |
Many-Body Invariants for Multipoles in Higher-Order Topological Insulators
![]() |
250 | Jun. 18 (MON), 10:00 AM | E6-2. 2nd fl. #2502 | Dr. Thibault VOGT |
Rydberg electromagnetically induced transparency and microwave-to-optical conversion using Rydberg atoms
![]() |
249 | 2015/10/16, 4PM | E6-2. 2nd fl. #2501 | Prof. Yung-Fu Chen(Solid-state Laser Physics Laboratory,National Central University) | Fluctuations of entropy production in partially masked electric circuits |
248 | Jan.9 (Wed.), 04:00 PM | E6-2. 2nd fl. #2501 | Dr. Heung-Sik Kim |
Molecular Mott state in the deficient spinel GaV4S8
![]() |
247 | 2015/09/14, 2PM | E6-2. 2nd fl. #2501 | Dr. Hae Ja Lee ( Stanford University, SLAC ) | Ultrafast X-ray Studies on Dynamics Matter in Extreme Conditions |
246 | Apr. 01 (Fri.) 2:30 PM | E6-2. 1st fl. #1501 | Dr. KICHEON KANG, Chonnam National University | Interference of single charged particles without a loop and dynamic nonlocality |