Preparation of entangled states of two photons in several spatial modes
Quantum Physics
2009-11-13 v1
Abstract
We describe a protocol capable of preparing an arbitrary state of two photons in several spatial modes using pairs of photons generated by spontaneous parametric down-conversion, linear optical elements and single-photon detectors or post-selection. The protocol involves unitary and non-unitary transformations realizable by beam splitters and phase shifters. Non-unitary transformations are implemented by attenuation filters. The protocol contains several optimization capabilities with the goal of improving overall probability of its success. We also show how entangled two-photon states required for quantum computing with linear optics can be prepared using a very simple and feasible scheme.
Keywords
Cite
@article{arxiv.0710.0980,
title = {Preparation of entangled states of two photons in several spatial modes},
author = {Karel Lemr and Jaromir Fiurasek},
journal= {arXiv preprint arXiv:0710.0980},
year = {2009}
}
Comments
9 pages, 9 figures, REVTeX4