Study on improving system performance of differential-phase-shift quantum key distribution
| Project/Area Number |
24560045
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Osaka University |
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Principal Investigator |
INOUE Kyo 大阪大学, 工学(系)研究科(研究院), 教授 (10393787)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 量子暗号通信 / 量子鍵配送 |
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| Outline of Final Research Achievements |
We have studied differential-phase-shift (DPS) quantum-key-distribution (QKD) related technologies. (1) “Intensity-modulated DPS-QKD” and “Measurement-device-independent DPS-QKD” have been proposed, which are modified to improve the system performance. (2) The DPS-QKD system performance considering phase fluctuation, that considering bit-error-rate fluctuation, and the robustness of DPS-QKD systems with power monitoring against blind attacks have been clarified, assuming practical situations. (3) “Intensity-modulation/direct-detection QKD” was proposed and evaluated, which features practicality employing apparatus used in conventional optical communication systems. (4) QKD systems multiplexing a quantum channel and a classical channel over one transmission fiber have been investigated, which is desirable in system implementation, where time-division-multiplexing and wavelength-division-multiplexing are assumed.
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Report
(4 results)
Research Products
(12 results)
