3 papers
quant-ph2026
Security of passive entanglement-based key distribution protocols
Shun Kawakami, Koichi Takasugi, Koji Azuma
Entanglement-based key distribution protocols, such as the Bennett-Brassard-Mermin 1992 (BBM92) protocol and quantum conference key agreement (QCKA), are promising applications of…
quant-ph2026
Security of Quantum Conference Key Agreement with Two-Way Classical Communication
Shun Kawakami, Mori Watanabe, Takuya Ikuta +1
Quantum conference key agreement (QCKA) enables multiple users to establish a common secret key with information-theoretic security and is regarded as a key primitive for secure co…
quant-ph2025
Security of the BB84 protocol with passive biased basis choice by the receiver
Shun Kawakami, Atsushi Taniguchi, Yoshihide Tonomura +2
The Bennett-Brassard 1984 protocol (BB84 protocol) is one of the simplest protocols for implementing quantum key distribution (QKD). In the protocol, the sender and the receiver it…