Review article: Linear optical quantum computing
Abstract
Linear optics with photon counting is a prominent candidate for practical quantum computing. The protocol by Knill, Laflamme, and Milburn [Nature 409, 46 (2001)] explicitly demonstrates that efficient scalable quantum computing with single photons, linear optical elements, and projective measurements is possible. Subsequently, several improvements on this protocol have started to bridge the gap between theoretical scalability and practical implementation. We review the original theory and its improvements, and we give a few examples of experimental two-qubit gates. We discuss the use of realistic components, the errors they induce in the computation, and how these errors can be corrected.
Cite
@article{arxiv.quant-ph/0512071,
title = {Review article: Linear optical quantum computing},
author = {Pieter Kok and W. J. Munro and Kae Nemoto and T. C. Ralph and Jonathan P. Dowling and G. J. Milburn},
journal= {arXiv preprint arXiv:quant-ph/0512071},
year = {2007}
}
Comments
41 pages, 37 figures, many small changes, added references, and improved discussion on error correction and fault tolerance