Quantum comparison machines with one-sided error
Quantum Physics
2007-05-23 v2
Abstract
It is always possible to decide, with one-sided error, whether two quantum states are the same under a specific unitary transformation. However we show here that it is {\em impossible} to do so if the transformation is anti-linear and non-singular. This result implies that unitary and anti-unitary operations exist on an unequal footing in quantum information theory.
Cite
@article{arxiv.quant-ph/0207060,
title = {Quantum comparison machines with one-sided error},
author = {Chiu Fan Lee and Neil F. Johnson},
journal= {arXiv preprint arXiv:quant-ph/0207060},
year = {2007}
}
Comments
5 pages, no figures