| 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.
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| 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 |
| » | October 15, 5:00pm | https://bit.ly/3ndIiJn | Dr. Samuli Autti |
Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe
 |
| 64 | Oct 9 (Fri), 09:00 AM | https://kaist.zoom.us/j/85161896513?pwd=U3pwWFFZaWVRamxDZUR5REhNeVk0UT09 | Prof. Tim Hsieh (Perimeter Institute) |
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| 63 | Oct. 16 (Fri.), 04:00 PM | https://kaist.zoom.us/j/89198078609 | Dr. Daesu Lee |
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| 62 | Oct. 16 (Fri.), 02:30 PM | https://kaist.zoom.us/j/89198078609 | Dr. Chulki Kim |
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| 61 | 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 |
| 60 | #1323(E6-2. 1st fl.) | Jul. 10th (Mon), 4pm | Dr. Duk Young Kim Los Alamos National Laboratory |
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| 59 | 2015/10/14, 6PM | KAIST Munji Campus Supex Hall | 이창환 교수 (부산대학교 물리학과) |
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| 58 | April 4, 2016 (Mon) - April 8, 2016 (Fri) | KAIST Natural Science Building (E6-2), RM #4314 | Dr. Fritz Caspers (CERN) | Radio frequency engineering |
| 57 | Aug. 4, 2016 (Thu.), 2:30 pm | KAIST Natural Science Building (E6-5), EDU 3.0 Room(1st fl.) | Prof. Argyris Nicolaidis | Relational Logic (with applications to Quantum Mechanics, String Theory, Cosmology, Neutrino Oscillations, Statistical Mechanics) |
| 56 | 2014/05/28, PM5 | KI Building, Matrix Hall | 이웅범 대표이사(LG이노텍) | 부품소재산업이 미래다 |
| 55 | 4월 18일(월), 15:30~ | KI빌딩(E4), 강의실 B501 (5F) | Prof. Robert A. DiStasio Jr. (Cornell University) |
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| 54 | 2017.1.9(Mon), 4PM | Lecture Hall, College of Natural Sciences [#1501,E6-2] | Prof. John Michael Kosterlitz, Brown University |
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| 53 | May 19, 2016 (Thur.) 3PM | May 19, 2016 (Thur.) 3PM, | Dr. Michael Betz, CERN | The CERN Resonant WISP Search: Development, Results and Lesson-Learned |
| 52 | 2016/09/05-12/12 4PM | Natual Scien Bldg.(E6)m #1501 | Yeong Kwan Kim 외 |
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| 51 | Mar 2 (Tue.), 16:00 | Online | Dr. Dmitry Svintsov |
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| 50 | Nov. 20 (Fri.), 04:00 PM | Online | Dr. Dohun Kim | Coherent control of field gradient induced quantum dot spin qubits |
| 49 | Dec.23(Wed), 10:00~16:00 | Online | Prof. YongKeun Park (KAIST) and etc. |
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| 48 | Dec. 11 (Fri.), 02:30 PM | online | Myung Hwa Jung(Sogang Univ.) | Antisymmetric interlayer exchange coupling in magnetic multilayers |
| 47 | Nov. 20 (Fri.), 02:30 PM | Online | Dr. Doohee Cho | Lumpy Cooper pairs in an iron-based superconductor |
| 46 | Dec. 11 (Fri.), 04:00 PM | online | Hyobin Yoo(Sogang Univ.) | Atomic and electronic reconstruction at van der Waals interface in twisted 2D materials |