The network impact of hijacking a quantum repeater

Takahiko Satoh, Shota Nagayama, Takafumi Oka, Rodney Van Meter

研究成果: Article査読

1 被引用数 (Scopus)


In quantum networking, repeater hijacking menaces the security and utility of quantum applications. To deal with this problem, it is important to take a measure of the impact of quantum repeater hijacking. First, we quantify the work of each quantum repeater with regards to each quantum communication. Based on this, we show the costs for repeater hijacking detection using distributed quantum state tomography and the amount of work loss and rerouting penalties caused by hijacking. This quantitative evaluation covers both purification-entanglement swapping and quantum error correction repeater networks. Naive implementation of the checks necessary for correct network operation can be subverted by a single hijacker to bring down an entire network. Fortunately, the simple fix of randomly assigned testing can prevent such an attack.

ジャーナルQuantum Science and Technology
出版ステータスPublished - 2018 5月 25

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 材料科学(その他)
  • 物理学および天文学(その他)
  • 電子工学および電気工学


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