UTokyo Open Lectures: Logic
Held on 2020

UTokyo Open Lectures: Logic

information security created by physical laws and logic [JP]
Masato Koashi


00:00 タイトル
00:21 講演者自己紹介と今回の講義概要
00:51 光とは?
06:47 双子の光子対の実験から
11:38 光速を超える速さと因果律の破れ
16:08 双子の光子の不思議な性質とギャンブルのお話
22:03 エンタングル状態を用いたからくりと量子力学の「非常識な」世界
25:37 量子力学の標準的な考え方と暗号通信への応用
31:19 双子の光子対を使った量子鍵配送
36:16 エラー解決と秘匿性増幅、量子回路の性質について
44:37 まとめ
45:42 エンドタイトル
Quantum mechanics is the natural law that underlies our world but it also has strange properties that defy common sense. Quantum cryptography, which uses weak light, is the application of this property to cryptography. The power of logic plays a major role in proving the ultimate security that cannot be broken no matter what is done.

- This lecture was conducted only in Japanese.

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the University of Tokyo Graduate School of Engineering / Professor

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