Rapid quantum states transfer and generation of non-local entangled states
| Project/Area Number |
23684019
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics I
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥25,220,000 (Direct Cost: ¥19,400,000、Indirect Cost: ¥5,820,000)
Fiscal Year 2013: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2011: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
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| Keywords | 半導体物性 / メゾスコピック系 / 量子細線 / 量子ドット / 量子情報 |
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| Research Abstract |
In this project, we aimed for realizing coherent single electron transfer between distant quantum dots, multiplication of the flying charge qubit and generation of a non-local electron spin entangled state. We first succeeded in realizing a single electron transfer between distant dots in a time scale much shorter than the decoherence time using a surface acoustic wave (SAW). Employing this technique, we then realized an interference experiment in a single electron unit, which is an important step towards qubit multiplication. We also employed this SAW transfer technique for generation of a non-local entangled state by splitting two entangled electrons. In addition, we employed a two-path interferometer for the phase measurement and found that transmission phase though a Kondo correlated quantum dot becomes pi/2.
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Report
(4 results)
Research Products
(71 results)
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[Journal Article] Stacking-order dependent transport properties of trilayer graphene2011
Author(s)
S.H.Jhang, M.F.Craciun, S.Schmidmeier, S.Tokumitsu, S.Russo, M.Yamamoto, Y.Skourski, J.Wosnitza, S.Tarucha, J.Eroms, C.Strunk
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Journal Title
Physical Review B
Volume: 84
Issue: 16
DOI
Related Report
Peer Reviewed
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[Presentation] 表面弾性波を用いた離れた量子ドット間の単一電子移送2012
Author(s)
山本倫久,Sylvain Hermelin,高田真太郎,樽茶清悟,Andreas D. Wieck,Laurent Saminadayar,Christopher Baeuerle,Tristan Meunier
Organizer
日本物理学会第67回年会
Place of Presentation
大阪,関西大学
Year and Date
2012-03-27
Related Report
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[Presentation] 表面弾性波を用いた離れた量子ドット間の単一電子移送2012
Author(s)
山本倫久, Sylvain Hermelin, 高田真太郎, 樽茶清悟, Andreas D.Wieck, Laurent Saminadayar, Christopher Baeuerle, Tristan Meunier
Organizer
日本物理学会
Place of Presentation
関西学院大学
Year and Date
2012-03-27
Related Report
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[Presentation] Fast and efficient transfer of a single electron between distant quantum dots2012
Author(s)
S. Hermelin, S. Takada, M. Yamamoto, S. Tarucha, A. D. Wieck, L. Saminadayar, C. Bäuerle, and T. Meunier
Organizer
7th international Conference on Quantum Dots
Place of Presentation
Santa Fe Convention Center, Santa Fe, New Mexico, USA
Year and Date
2012-03-18
Related Report
Invited
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[Presentation] 3層グラフェンにおける輸送現象の積層構造依存性2011
Author(s)
徳光晋太朗, S.H.Jhang, M.F.Craciun, S.Schmidmeier, S.Russo, 山本倫久, Y.Skourski, J.Wosnitza, C.Strunk, 樽茶清悟
Organizer
日本物理学会秋季大会
Place of Presentation
富山大学
Year and Date
2011-09-22
Related Report
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