Recognizing how some states are built, from mixed states to singlets
Quantum Physics
2015-03-06 v2
Abstract
It is well known that different preparations of a mixed state cannot be distinguished by a measurement of that state. Yet we show that some other experiments let us make this distinction despite a very general belief that this would not be possible. Issues in quantum cryptography that prompted this work are only briefly mentioned in this letter.
Keywords
Cite
@article{arxiv.1406.3549,
title = {Recognizing how some states are built, from mixed states to singlets},
author = {Charles Tresser and Enrique Pujals},
journal= {arXiv preprint arXiv:1406.3549},
year = {2015}
}
Comments
This paper has been withdrawn by the author due to a crucial mistake in the proof