Efficient information reconciliation with turbo codes over the quantum channel

In this paper, we introduce a new error correcting protocol in quantum key distribution. With this method, leakage information during the information reconciliation is reduced and a longer key can be obtained. In order to correct errors on the quantum key, we apply the turbo codes and transmit the parity information over the quantum channel. We compare loss rate of the proposed information reconciliation method with a conventional scheme in quantum key distribution.