%0 Electronic Article %A T. Hwang %A K.-C. Lee %K security %K eavesdroppers %K classical cryptographic techniques %K qubit efficiency %K public discussions %K EPR quantum key distribution protocols %X Public discussion is a useful way for quantum key distribution protocols to reveal the presence of eavesdroppers. However, to ensure better security, nearly 50% of the transmitted qubits are spent in public discussions. Consequently, the original EPR quantum key distribution protocol provides only 25% qubit efficiency and Deng et al.'s scheme delivers only 50% qubit efficiency. By bringing classical cryptographic techniques into the quantum arena, this work proposes EPR quantum key distribution protocols with a potential of 100% qubit efficiency. %@ 1751-8709 %T EPR quantum key distribution protocols with potential 100% qubit efficiency %B IET Information Security %D March 2007 %V 1 %N 1 %P 43-45 %I Institution of Engineering and Technology %U https://digital-library.theiet.org/;jsessionid=rg8gjtr21u4.x-iet-live-01content/journals/10.1049/iet-ifs_20060124 %G EN