Quantum state transfer from a photon to an electron spin in a quantum dot
Project/Area Number |
24244044
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics I
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Research Institution | Yokohama National University (2013, 2015) Tohoku University (2012, 2014) |
Principal Investigator |
Kosaka Hideo 横浜国立大学, 工学(系)研究科(研究院), 教授 (20361199)
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Project Period (FY) |
2012-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥46,540,000 (Direct Cost: ¥35,800,000、Indirect Cost: ¥10,740,000)
Fiscal Year 2014: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2013: ¥15,340,000 (Direct Cost: ¥11,800,000、Indirect Cost: ¥3,540,000)
Fiscal Year 2012: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
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Keywords | 量子エレクトロニクス / スピントロニクス / 光物性 / 量子井戸 / 量子ドット / スピンエレクトロニクス / 量子エレクトロニクス / スピンエレクトロニクス |
Outline of Final Research Achievements |
We succeeded experiments for quantum entanglement absorption to detect the entanglement between a ground state electron in an NV center and an incoming photon (published in Physical Review Letters), and quantum state transfer from a photon to a ground state electron based on the quantum teleportation scheme (published in Nature Photonics). Transfer fidelity of over 90% was achieved by purifying the transfer events based on post-selection. We also succeeded to prolong the quantum memory time (phase relaxation time) over 100 times by the developed geometric spin echo (published in Nature Communications). The phase relaxation time of world-longest 1.9 ms was achieved by repeating the echo.
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Report
(4 results)
Research Products
(80 results)
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[Journal Article] Observation of bound and antibound states of cavity polariton pairs in a CuCl microcavity2014
Author(s)
S. Matsuura, Y. Mitsumori, H. Kosaka, K. Edamatsu, K. Miyazaki, D. Kim, M. Nakayama, G. Oohata, H. Oka, H. Ajiki, and H. Ishihara
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Journal Title
Phys. Rev. B
Volume: 89
Pages: 035317
Related Report
Peer Reviewed
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[Journal Article] Polarization dependence of four-wave mixing via biexcitons in CuCl microcavities2012
Author(s)
S. Matsuura, Y. Mitsumori, H. Kosaka, K. Edamatsu, K. Miyazaki, Y. Kanatani, D. Kim, M. Nakayama, G. Oohata, H. Oka, H. Ajiki, H. Ishihara,
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Journal Title
Physica Status Solidi ( C )
Volume: 9
Pages: 2505-2508
Related Report
Peer Reviewed
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[Presentation] Quantum Hybridization: Two Wrong’s Making a Right2015
Author(s)
W.J. Munro, Y. Matsuzaki, H, Todai, K. Kakuyanagi, N. Mizuochi, H. Kosaka, K. Nemoto and S. Saito
Organizer
The Asia-Pacific Conference and Workshop on Quantum Information Science 2015(APCWQIS 2015)
Place of Presentation
University of Auckland, Auckland, NZ
Year and Date
2015-11-30 – 2015-11-30
Related Report
Int'l Joint Research
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[Presentation] Development of a time-dependent T-matrix theory2014
Author(s)
Kaoru Ohno, Shota Ono, Swastibrata Bhattacharyya, Tomoyuki Horikiri, and Hideo Kosaka
Organizer
The 2nd International Symposium on Computics(ISC-QSD2014)
Place of Presentation
Tokyo, Japan
Year and Date
2014-12-01 – 2014-12-03
Related Report
Int'l Joint Research
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[Presentation] The Role of Memories in Quantum Networks2014
Author(s)
W.J Munro, K. Azuma, S. J. Devitt, A. Stephens, Keith A. Harrison, M. Trupke, J, Schmiedmayer, H. Kosaka, Kae Nemoto
Organizer
OSA Research in Optical Science: Quantum Information and Measurement (QIM)
Place of Presentation
Berlin, Germany
Year and Date
2014-03-18
Related Report
Invited
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[Presentation] How to get performance out of your quantum network?2014
Author(s)
W. J. Munro, K. Azuma, K. Shimuzu, S. J. Devitt, A. Stephens, M. Trupke, J, Schmiedmayer, H. Kosaka, N. Mizuochi, Kae Nemoto
Organizer
International Workshop on Quantum Communications Networks (QCN2014)
Place of Presentation
Leeds, United Kingdom
Year and Date
2014-01-09
Related Report
Invited
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[Presentation] Polarization Dependence of Four Wave Mixing via Biexcitons in CuCl Microcavities (poster)2012
Author(s)
S. Matsuura, Y. Mitsumori, H. Kosaka, K. Edamatsu, K. Miyazaki, Y. Kanatani, D. Kim, M. Nakayama, G. Ohata, H. Oka, H. Ajiki and H. Ishihara,
Organizer
Fifth International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA12)
Place of Presentation
Nara, Japan
Year and Date
20120604-20120607
Related Report
Invited
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