Quantum key distribution based on orthogonal states allows secure quantum bit commitment

@article{He2011QuantumKD,
title={Quantum key distribution based on orthogonal states allows secure quantum bit commitment},
author={G. P. He},
journal={Journal of Physics A},
year={2011},
volume={44},
pages={445305}
}

For more than a decade, it was believed that unconditionally secure quantum bit commitment (QBC) is impossible. But based on a previously proposed quantum key distribution scheme using orthogonal states, here we build a QBC protocol in which the density matrices of the quantum states encoding the commitment do not satisfy a crucial condition on which the no-go proofs of QBC are based. Thus, the no-go proofs could be evaded. Our protocol is fault-tolerant and very feasible with currently… CONTINUE READING