Toward the realization of highly efficient photonic quantum memory using diamond vacancy centers as lambda-type atoms.
| Project/Area Number |
23244079
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | Kyoto University (2013)
Hokkaido University (2011-2012) |
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Principal Investigator |
TAKEUCHI shigeki 京都大学, 工学(系)研究科(研究院), 教授 (80321959)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥48,100,000 (Direct Cost: ¥37,000,000、Indirect Cost: ¥11,100,000)
Fiscal Year 2013: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2012: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2011: ¥24,830,000 (Direct Cost: ¥19,100,000、Indirect Cost: ¥5,730,000)
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| Keywords | 光子 / 量子メモリ / 量子情報 / 量子中継 |
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| Outline of Final Research Achievements |
Toward the realization of photonic quantum memory, we studied on the system where a nitrogen vacancy center (NVC) in diamond is coupled to micro optical cavity with tapered optical fiber input/output. First, we successfully observed the first observation of an ultra-narrow linewidth (1.2 GHz) of the photoemission from a single NV center in a nanodiamond. We also realized a fiber-microsphere system at cryogenic temperature below 10K. We also successfully performed the optically detected magnet resonance of a single/few NV centers coupled with a tapered optical fiber. Finally, we succeeded in the realization of a nanofiber brag cavity and the highly efficient coupling of a single emitter to the system. These results are important steps for the realization of the photonic quantum memory.
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Report
(4 results)
Research Products
(49 results)
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[Journal Article] Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement2012
Author(s)
Akira Tanaka, Ryo Okamoto, Hwan Hong Lim, Shanthi Subashchandran, Masayuki Okano, Labao Zhang, Lin Kang, Jian Chen, Peiheng Wu, Toru Hirohata, Sunao Kurimura, and Shigeki Takeuchi
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Journal Title
Optics Express
Volume: 20
Issue: 23
Pages: 25228-25238
DOI
Related Report
Peer Reviewed
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