Abstract
In order to deal with the error of oblivious key distribution caused by quantum channel noise, a new quantum privacy query (QPQ) protocol with six-qubit with decoherence is proposed. When the error rate caused by quantum channel noise is less than 30%, the final key bit error rate of this protocol is better than that of other QPQ protocols using the same post-processing algorithm. Furthermore, the protocol is also a cheat-sensitive protocol, in which dishonesty of either party can be detected.
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