Quantum cloning a pair of orthogonally polarized photons with linear optics
Quantum Physics
2009-11-13 v1
Abstract
A linear optical probabilistic scheme for the optimal cloning of a pair of orthogonally-polarized photons is devised, based on single- and two-photon interferences. It consists in a partial symmetrization device, realized with a modified unbalanced Mach-Zehnder interferometer, followed by two independent Hong-Ou-Mandel interferometers. This scheme has the advantage that it enables quantum cloning without the need for stimulated amplification in a nonlinear medium. It can also be modified so to make an optical two-qubit partial SWAP gate, thereby providing a potentially useful tool to linear optics quantum computing.
Keywords
Cite
@article{arxiv.0711.4212,
title = {Quantum cloning a pair of orthogonally polarized photons with linear optics},
author = {Jaromir Fiurasek and Nicolas J. Cerf},
journal= {arXiv preprint arXiv:0711.4212},
year = {2009}
}
Comments
6 pages, 2 figures, RevTeX4