장소 | https://bit.ly/3ndIiJn |
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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.
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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 |
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63 | November 28 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Kyung Taec Kim |
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62 | November 14 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Ji-Hun Kang |
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61 | April 26 (Fri.), 4:00 PM | #1323, E6-2 | Dr. Soonwon Choi |
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60 | May 1 (Wed), 4:00 PM | #1323, E6-2 | Dr. Sungkyun Choi |
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59 | December 13 (Fri.), 1:30-4:30 PM | #1323, E6-2 |
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58 | June 22 (Fri.), 04:00 PM | #1323, E6-2 | Dr. Daniel Sando |
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57 | June 22 (Fri.), 04:00 PM | #1323, E6-2 | Dr. Daniel Sando |
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56 | November 29 (Thu.), 16:00 PM | #1323, E6-2 | Dr. Kee suk Hong |
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55 | November 7 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Je-Hyung Kim |
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54 | December 3 (Tue.), 4:00 PM | #1323, E6-2 | Dr. Jong Mok Ok |
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53 | December 18 (Tue.), 4:00 PM | #1323, E6-2 | Prof. Shin-ichi Uchida |
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52 | May 29 (Tue.), 04:00 PM | #1323, E6-2 | Prof. Jae-Won Jang |
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51 | February 20 (Thu), 4:00 PM | #1323, E6-2 | Seunghyun Khim |
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50 | May 2 (Thu.), 4:00 PM | #1323, E6-2 | Prof. Joon Ik Jang |
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49 | June 28 (Fri.), 13:30 PM | #1323, E6-2 | Dr. Yusuke Kozuka |
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47 | July 9 (Mon.), 14:00 PM | #1323, E6-2 | Prof. Cesar A. Hidalgo, MediaLab, MIT |
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46 | January 17 (Fri), 4:00 PM | #1323, E6-2 | Hiroki Ikegami |
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