• 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/
  • ウェブサイト
  • 食堂・売店 利用予定なし/0



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.