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 |
162 | July 13, 2018 at 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Prof. Ian Lewis (The University of Kansas, Department of Physics & Astronomy) | Loop Induced Single Top Partner Production and Decay at the LHC |
161 | July 2, 2020 (Thursday) | Zoom Video Conference Seminar | Dr. Emmanuel Flurin (CEA Saclay) |
An irreversible qubit-photon coupling for the detection of itinerant microwave photons
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160 | July 2. 2018 (Monday) 3:00 PM | Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus | Dr. Peter Winter (Argonne National Laboratory) |
High Precision Magnetic Field Measurement for the Muon g-2 Experiment
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159 | 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 |
Challenges and Opportunities in Theoretical Particle Physics 2019
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158 | July 25(Thur.),4:00PM | E6-2, #1323 | Prof.Bohm-Jung Yang |
Band topology of twisted bilayer graphene
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157 | July 26, 2018 at 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Manki Kim (Department of Physics, Cornell University) |
Inflation in String Theory and Backreaction
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156 | July 27, 2018 at 15:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Dr. Hyejung Kim(Technische University Dresden) |
Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima
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155 | July 30 (Tue), 4:00 PM | #1323, E6-2 | Dr. Mingu Kang |
Dirac fermions and flat bands in correlated kagome metals
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154 | July 31(Wed.)/ 16:00 | E6-2, #1323 | Dr. Ivan Borzenets |
Features of ballistic superconducting graphene
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153 | July 8(Mon), 14:00 | E6, #1322 | T. L. M. Guedes (Univ. of Konstanz) |
Ultrabroadband squeezed pulses and their relation to relativity
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152 | July 9 (Mon.), 14:00 PM | #1323, E6-2 | Prof. Cesar A. Hidalgo, MediaLab, MIT |
The principles of collective learning
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151 | July. 14 (Fri.), 3:00 PM | #1323 (E6-2. 1st fl.) | Dr. Jun Hyun Lee / University of Maryland |
Chiral anomaly in disordered Weyl semimetals
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150 | 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 |
149 | Jun 24 (Mon) 11:00 | E6-2, #1323 | Dr. Henning Schomerus |
Topological photonic anomalies
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148 | Jun 28, 14:00 | E6-2, #1322 | Dr. Bongjae Kim, Dr. Sooran Kim, Dr. Jeongwoon Hwang |
1st Research-exchange meeting of computational material physics
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147 | Jun. 01 (Fri.), 11:00 AM | E6-2. 1st fl. #1323 | Dr. Seung Sae Hong |
Topological phases in low-dimensional quantum materials
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146 | Jun. 1(Wed) 10:30 AM | BK21 Conference Room (#1318, E6-2) | Dr. Noriaki Horiuchi, Editor, Nature Photonics | Welcome to Nature Photonics |
145 | Jun. 14 (Tue) 4PM | Seminar Room (#2502, 2nd fl.) | Young-Sik Ra, Université Pierre et Marie Curie | Photonic quantum network based on multimode squeezed vacuums and single-photon subtraction |
» | Jun. 16 (Thu) 4PM | #1323(E6-2, 1st fl.) | Hyochul Kim, Samsung Advanced Institute of Technology | Quantum information processing using quantum dots and photonic crystal cavities |
143 | 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
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