KEK素粒子原子核研究所・理論セミナー/Vaidman

分類理論セミナー
開始2015/09/27(日)13:00
終了2015/09/27(日)14:30
会場研究本館3階 セミナーサロン322
講演タイトルCounterfactual Communication
講演者Dr. Lev Vaidman (​Tel Aviv University)
言語英語/English
連絡先松久 勝彦/matsuhis-AT-post.kek.jp
ウェブサイト
食堂・売店利用予定なし/0

概要

(ABSTRACT)

Counterfactual communication is a communication without particles in the transmission channel. Since there are no particles to observe, it apparently cryptographically secure because Eve has nothing to eavesdrop on. However, the issue is highly controversial. I will describe: interaction-free measurements, counterfactual key distribution, and direct counterfactual communication protocols. Analyzing the weak trace left in the transmission channel, I will argue that counterfactual communication is possible only for one bit value.

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