Studies on quantum state transfer and creation of entanglement between photons and electron spins using quantum dots
| Project/Area Number |
25246005
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Nanostructural physics
|
|---|
| Research Institution | Osaka University (2014-2016)
The University of Tokyo (2013) |
|---|
Principal Investigator |
OIWA Akira 大阪大学, 産業科学研究所, 教授 (10321902)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
山本 倫久 東京大学, 工学(系)研究科(研究院), 講師 (00376493)
樽茶 清悟 東京大学, 工学(系)研究科(研究院), 教授 (40302799)
|
|---|
| Research Collaborator |
WIECK Andreas D. Ruhr-Universität
|
|---|
| Project Period (FY) |
2013-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥45,890,000 (Direct Cost: ¥35,300,000、Indirect Cost: ¥10,590,000)
Fiscal Year 2016: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2015: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2014: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2013: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
|
|---|
| Keywords | 量子ドット / 光子 / 電子スピン / 量子状態転写 / 量子中継 / 量子もつれ / 量子コンピュータ / メゾスコピック系 / 半導体物性 / 応用工学・量子光工学 / もつれ光子対 / 光子－電子スピン量子状態転写 / 単一もつれ光子-電子変換 / 光スピン量子インターフェース |
|---|
| Outline of Final Research Achievements |
Studies on quantum communications and quantum computing, of which operating principles are based on quantum mechanics, are rapidly developing because of the demands on secure, large capacity, and high speed information processing. In this work, we aim at realizing the basic technologies of quantum repeaters indispensable for quantum communications using electron spins confined in electrically controllable quantum dots (QDs). First, we achieved the detection of single photo-electron spins and verified the angular momentum transfer between circularly polarized photons and electron spins, indicating the feasibility of quantum state transfer. Furthermore, we accomplished the simultaneous detections of a photon of an entangled photon pair and an electron generated by the other photon of the pair in a QD. For the first time to the electrically controllable QDs, we obtained a crucial achievement toward entanglement distribution among remote locations, which is required for quantum repeaters.
|
Report
(5 results)
Research Products
(97 results)
-
-
-
-
-
-
-
[Journal Article] Signatures of Hyperfine, Spin-Orbit, and Decoherence Effects in a Pauli Spin Blockade2016
Author(s)
T. Fujita, P. Stano, G. Allison, K. Morimoto, Y. Sato, M. Larsson, J.-H. Park, A. Ludwig, A.D. Wieck, A. Oiwa, and S. Tarucha
-
Journal Title
Physical Review Letters
Volume: 117
Issue: 20
Pages: 206802-206802
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
-
-
-
-
-
-
[Journal Article] Tuning the electrically evaluated electron Land´e g factor in GaAs quantum dots and quantum wells of different well widths2014
Author(s)
G. Allison, T. Fujita, K. Morimoto, S. Teraoka, M. Larsson, H. Kiyama, A. Oiwa, S. Haffouz, D. G. Austing, A. Ludwig, A. D. Wieck, and S. Tarucha
-
Journal Title
PHYSICAL REVIEW
Volume: B 90
Issue: 23
Pages: 2353101-5
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
-
[Journal Article] Single photoelectron detection after selective excitation of electron heavy-hole and electron light-hole pairs in double quantum dots2014
Author(s)
K. Morimoto, T. Fujita, G. Allison, S. Teraoka, M. Larsson, H. Kiyama, S. Haffouz, D. G. Austing, A. Ludwig, A. D. Wieck, A. Oiwa, and S. Tarucha
-
Journal Title
PHYSICAL REVIEW
Volume: B 90
Issue: 8
Pages: 0853061-5
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Quantum dephasing of spin qubits due to nonergodic noise2016
Author(s)
Matthieu R. Delbecq, Takashi Nakajima, Peter Stano, Tomohiro Otsuka, Shinichi Amaha, Jun Yoneda, Kenta Takeda, Giles Allison, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
Organizer
33rd International Conference on The Physics of Semiconductors (ICPS2016)
Place of Presentation
北京（中国）
Year and Date
2016-08-02
Related Report
Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Real - time detection of optically excited single electron spins in a lateral double quantum dot2013
Author(s)
T. Fujita , K. Morimoto, G. Allison, S. Teraoka, H. Kiyama, M. Larsson, A. Ludwig, A. D. Wieck, A. Oiwa , and S. Tarucha
Organizer
International Symposium on Nanoscale Transport and Technology (ISNTT2014)
Place of Presentation
Kanagawa, NTT Basic Reserach Lab.
Related Report
-
-
-
-
-
