Single-shot secure quantum network coding on butterfly network with free public communication. (17th October 2017)

• Record Type: Journal Article
• Authors: Owari, Masaki; Kato, Go; Hayashi, Masahito
• Is Part Of: Quantum science and technology. Volume 3:Number 1(2018)
• Publication Date: 2017-10-17
• Subjects: secrecy -- quantum state -- network coding -- butterfly network -- multiple unicast; Quantum theory -- Periodicals; Quantum theory; Periodicals; 530
• DOI: 10.1088/2058-9565/aa8ac4
• Languages: English
• ISSNs: 2058-9565

Abstract

Abstract: Quantum network coding on the butterfly network has been studied as a typical example of quantum multiple cast network. We propose a secure quantum network code for the butterfly network with free public classical communication in the multiple unicast setting under restricted eavesdropper's power. This protocol certainly transmits quantum states when there is no attack. We also show the secrecy with shared randomness as additional resource when the eavesdropper wiretaps one of the channels in the butterfly network and also derives the information sending through public classical communication. Our protocol does not require verification process, which ensures single-shot security.