Efficient quantum key distribution scheme with pre-announcing the basis
State Key Laboratory of Integrated Services Networks, Xidian University - Xi'an 710071, China
Received: 7 November 2013
Accepted: 12 March 2014
We devise a new quantum key distribution scheme that is more efficient than the BB84 protocol. By pre-announcing the basis, Alice and Bob are more likely to use the same basis to prepare and measure the qubits, thus achieving a higher efficiency. The error analysis is revised and its security against any eavesdropping is proven briefly. Furthermore we show that, compared with the LCA scheme, our modification can be applied in more quantum channels.
PACS: 03.67.Dd – Quantum cryptography and communication security / 03.67.Hk – Quantum communication / 03.67.Pp – Quantum error correction and other methods for protection against decoherence
© EPLA, 2014