The quantum cryptography and the unambiguous measurement of quantum nonorthogonal states
Quantum Physics
2008-02-03 v2
Abstract
We discuss the unambiguous measurement of quantum nonorthogonal states in connection with the quantum cryptography. We show that checking a ratio of null one to signal is essential in detecting a certain kind of eavesdropping in the case of two nonorthogonal states quantum cryptography. We prove that it is not needed in the case of the four states quantum cryptography.
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Cite
@article{arxiv.quant-ph/9702037,
title = {The quantum cryptography and the unambiguous measurement of quantum nonorthogonal states},
author = {Won Young Hwang and In Gyu Koh and Yeong Deok Han},
journal= {arXiv preprint arXiv:quant-ph/9702037},
year = {2008}
}
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