Quantum information processing based on complementarity in quantum mechanics
| Project/Area Number |
20540389
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Osaka University |
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Principal Investigator |
KOASHI Masato Osaka University, 大学院・基礎工学研究科, 准教授 (90322099)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 相補性 / 量子暗号 / 量子鍵配送 / 量子もつれ / DPS-QKD / 6状態量子暗号方式 / BB84方式 / 光子分離攻撃 / 単一光子光源 / 光子統計 / 量子中継器 / DFS |
|---|
| Research Abstract |
Theory on the security of quantum key distribution (QKD) protocols based on complementarity in quantum mechanics has been developed. This method is applicable to any QKD protocols in principle. Security proofs were provided for several QKD protocols with practical devices. Quantitative relations among various properties of quantum origin (quantum entanglement, private communication, and complementarity) were revealed through derivation of universal equations connecting the measures of quantum correlation defined operationally in terms of those properties.
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Report
(4 results)
Research Products
(67 results)
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[Presentation] Security of quantum key distribution with practical detectors2010
Author(s)
Yuya Kobayashi, Masato Koashi, et al.
Organizer
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program), Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
Place of Presentation
Convention Center, Osaka University, Osaka, Japan
Year and Date
2010-06-01
Related Report
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[Presentation] Security of quantum key distribution with practical devices2010
Author(s)
Masato Koashi
Organizer
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program), Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
Place of Presentation
Convention Center, Osaka University, Osaka, Japan(招待講演)
Year and Date
2010-05-30
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