We propose an experimental scheme that has the potential for large-scale realization of continuous-variable (CV) cluster states for universal quantum computation. We do this by mapping CV cluster-state graphs onto two-mode squeezing graphs, which can be engineered into a single optical parametric oscillator (OPO). The desired CV cluster state is produced directly from a joint squeezing operation on the vacuum using a multi-frequency pump beam. This method has potential for ultracompact experimental implementation. As an illustration, we detail an experimental proposal for creating a four-mode square CV cluster state with a single OPO.
@article{arxiv.quant-ph/0703096,
title = {Ultracompact Generation of Continuous-Variable Cluster States},
author = {Nicolas C. Menicucci and Steven T. Flammia and Hussain Zaidi and Olivier Pfister},
journal= {arXiv preprint arXiv:quant-ph/0703096},
year = {2007}
}
Comments
4 pages, 1 figure; v2 improved discussion of the implications of our result; added discussion of finite squeezing effects