Implementation of quantum maps by programmable quantum processors
Quantum Physics
2009-11-07 v1
Abstract
A quantum processor is a device with a data register and a program register. The input to the program register determines the operation, which is a completely positive linear map, that will be performed on the state in the data register. We develop a mathematical description for these devices, and apply it to several different examples of processors. The problem of finding a processor that will be able to implement a given set of mappings is also examined, and it is shown that while it is possible to design a finite processor to realize the phase-damping channel, it is not possible to do so for the amplitude-damping channel.
Cite
@article{arxiv.quant-ph/0205050,
title = {Implementation of quantum maps by programmable quantum processors},
author = {Mark Hillery and Mario Ziman and Vladimir Buzek},
journal= {arXiv preprint arXiv:quant-ph/0205050},
year = {2009}
}
Comments
10 revtex pages, no figures