장소 | #1323(E6-2, 1st fl.) |
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일시 | Jun. 16 (Thu) 4PM |
연사 | Hyochul Kim, Samsung Advanced Institute of Technology |
“Quantum information processing using quantum dots and photonic crystal cavities”
Jun. 16 (Thu) 4PM, #1323(E6-2, 1st fl.)
Hyochul Kim, Samsung Advanced Institute of Technology
The ability to interface light with solid-state quantum bits (qubits) is essential for future development of scalable and compact quantum information systems that operate on ultra-fast timescales. Photons act as ideal carriers of quantum information and can serve as an efficient quantum link between matter qubits. Quantum dots (QDs) provide a promising implementation of a matter qubit, which can store quantum information in both excitonic states and highly stable spin states, providing an atom-like system in a semiconductor platform. By coupling these QDs to optical nano-cavities it becomes possible to achieve the strong coupling regime where a QD can modify the cavity spectral response, providing an efficient light-matter interface.
In this talk, I will explain that the qubit state of a photon can be controlled by a single solid-state qubit composed of a QD strongly coupled to a photonic crystal cavity. The QD acts as a coherently controllable qubit system that conditionally flips the polarization of a photon reflected from the cavity on picosecond timescales, which implements a controlled NOT logic gate between the QD and the incident photon. Furthermore, the spin of a single electron or hole trapped in a charged QD can be used as a solid-state qubit with long coherence time. I will discuss our recent experimental realization of a quantum phase switch using a solid-state spin confined in a QD strongly coupled to a photonic crystal cavity, where the switch applies a spin-dependent phase shift on a photon.
Contact: Yoonsoo Kim (T.2599)
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번호 | 일시 | 장소 | 연사 | 제목 |
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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 |
181 | 2015/03/04, 12PM | 1323호, E6-2 | Prof. Choi Hak-Soo(Harvard) |
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180 | May. 3 (Fri), 11:00 AM | E6-2. 2st fl. #2502 | Prof. Changhee Sohn |
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179 | 2014/12/22, 2PM | E6, Rm1319 | Prof. Changbong Hyeon (KIAS) |
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178 | May 30 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Chang-Hee Cho |
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177 | July 9 (Mon.), 14:00 PM | #1323, E6-2 | Prof. Cesar A. Hidalgo, MediaLab, MIT |
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176 | 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) |
175 | 2019. 8. 22 4PM & 8. 23 3PM | #1323, E6-2 | Prof. Andrew N Cleland |
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174 | 8/19 (Mon), 10:00~11:30, 8/22 (Thur), 10:00~11:30 | Rm. 1322, E6-2 | Nicolas Treps |
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173 | 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 |
172 | January 23, 2019 | Rm. C303, Creation Hall (3F), Munji Campus | Mikko Mottonen |
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171 | July 26, 2018 at 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Manki Kim (Department of Physics, Cornell University) |
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170 | Jul 3rd, 2019 (Wed) | E6-2, 2501 | Kyung Soo Choi |
Many-body quantum electrodynamis (QED) with atoms and photons: A new platform for quantum optics"
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169 | Jun 1 (Wed) 4 PM | #1323(E6-2 1st fl.) | Kil-Byoung Chai, Caltech | Laboratory experiments relevant to mesospheric clouds, Saturn’s rings & astrophysical jets |
168 | 2012/02/13-05/14 | E6, 1501 | Kenji Ohmori (Photo-Molecular Science, IMS) | Physics Colloquium : 2012 Spring |
167 | August. 6th (TUE), 14:00 | E6 Room(#1323) | Kanghyun Chu |
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166 | July 21 - August 2 | E6-2,# 5318 | Junmou Chen/Thomas Flacke/Kaoru Hagiwara/Junichi Kanzaki/Chris Kelso/Jeong Han Kim/Kyoungchul Kong/Gabriel Lee/Hye-Sung Lee/Ian Lewis |
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165 | Sep10(Tue), 15:00 | #2502, E6-2 | Jun Ho Son |
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164 | August. 16th (Fri), 14:00 | E6 Room(#1323) | Jinxing Zhang |
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163 | May. 8th (Wed), 16:00 | E6 Room(#1323) | Jieun Lee |
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162 | May. 8th (Wed), 16:00 | E6 Room(#1323) | Jieun Lee |
Imaging valley dependent electron transport in 2D semiconductors
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