2016 Fiscal Year Annual Research Report
Device Physics of High Temperature Operational Single Photon Emitters
| Project/Area Number |
15H06141
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Holmes Mark 東京大学, 生産技術研究所, 准教授 (90760570)
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| Project Period (FY) |
2015-08-28 – 2017-03-31
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| Keywords | 量子ドット |
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| Outline of Annual Research Achievements |
While last year's work focussed on attaining high temperature operation, this year progress was made towards understanding the optical polarization properties of single photon emission from both GaN/AlGaN and InGaN/GaN quantum dots in nanowires. Indeed, single photon emission with a (raw, uncorrected) g(2)(0) measurement of 0.15 and a degree of linear polarization of larger than 95% was recorded from a site controlled GaN nanowire quantum dot at low temperature under pulsed excitation using the 3rd harmonic of a Ti:Sapphire laser (excitation of carriers directly into the quantum dot via the continuum states). At the time this result represented the most pure measurement of linealy polarized single photons from the III-nitride materials system. Work was also carried out into polar, semipolar, and nonpolar InGaN quantum dots in nanowires, where linealy polarized single photon emission was also measured for the first time. These measurements of linearly polarized single photon emission extended over a wavelength range of 480nm to 375nm (and down to 287nm when including the afforementioned GaN nanowire quantum dots) - showing that III-nitride QDs are capable of generating linearly polarized single photons over a wide range of wavelengths from the visible to the deep ultraviolet.
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| Research Progress Status |
28年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
28年度が最終年度であるため、記入しない。
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Research Products
(7 results)
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[Journal Article] Emission of Linearly Polarized Single Photons from Quantum Dots Contained in Nonpolar, Semipolar, and Polar Sections of Pencil-Like InGaN/GaN Nanowires2017
Author(s)
Z. Gacevic, M. Holmes, E. Chernysheva, M. Muller, A. Torres-Pardo, P. Veit, F. Bertram, J. Christen, J. M. G. Calbet, Y. Arakawa, E. Calleja, and S. Lazic
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Journal Title
ACS Photonics
Volume: 4
Pages: 657-664
DOI
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] GaNナノワイヤ量子ドットと単一光子発生2017
Author(s)
M. Holmes, S. Kako, K. Choi, M. Arita, and Y. Arakawa
Organizer
2017年電子情報通信学会総合大会
Place of Presentation
Ｎａｇｏｙａ， Ｊａｐａｎ
Year and Date
2017-03-22 – 2017-03-25
Invited
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