フッ素により機能化された無機材料の合成、構造、ならびに応用

京都大学新制・課程博士博士(エネルギー科学)甲第23295号エネ博第420号新制||エネ||80(附属図書館)京都大学大学院エネルギー科学研究科エネルギー基礎科学専攻(主査)教授 萩原 理加, 教授 野平 俊之, 教授 坂口 浩司学位規則第4条第1項該当Doctor of Energy ScienceKyoto UniversityDFA

Security of differential phase shift quantum key distribution against individual attacks

We derive a proof of security for the Differential Phase Shift Quantum Key Distribution (DPSQKD) protocol under the assumption that Eve is restricted to individual attacks. The security proof is derived by bounding the average collision probability, which leads directly to a bound on Eve's mutual information on the final key. The security proof applies to realistic sources based on pulsed coherent light. We then compare individual attacks to sequential attacks and show that individual attacks are more powerful