Methods for linear optical quantum Fredkin gate
Quantum Physics
2008-07-03 v1
Abstract
We consider the realization of quantum Fredkin gate with only linear optics and single photons. First we construct a heralded Fredkin gate using four heralded controlled-not (CNOT) gates. Then we simplify this method to a post-selected one utilizing only two CNOT gates. We also give a possible realization of this method which is feasible with current experimental technology. Another post-selected scheme requires time entanglement of the input photons but needs no ancillary photons.
Keywords
Cite
@article{arxiv.0804.0992,
title = {Methods for linear optical quantum Fredkin gate},
author = {Yan-Xiao Gong and Guang-Can Guo and Timothy C. Ralph},
journal= {arXiv preprint arXiv:0804.0992},
year = {2008}
}
Comments
5 pages, 5 figures