Fault Tolerance in Parity-State Linear Optical Quantum Computing
Abstract
We use a combination of analytical and numerical techniques to calculate the noise threshold and resource requirements for a linear optical quantum computing scheme based on parity-state encoding. Parity-state encoding is used at the lowest level of code concatenation in order to efficiently correct errors arising from the inherent nondeterminism of two-qubit linear-optical gates. When combined with teleported error-correction (using either a Steane or Golay code) at higher levels of concatenation, the parity-state scheme is found to achieve a saving of approximately three orders of magnitude in resources when compared to a previous scheme, at a cost of a somewhat reduced noise threshold.
Cite
@article{arxiv.0908.3932,
title = {Fault Tolerance in Parity-State Linear Optical Quantum Computing},
author = {A. J. F. Hayes and H. L. Haselgrove and Alexei Gilchrist and T. C. Ralph},
journal= {arXiv preprint arXiv:0908.3932},
year = {2013}
}
Comments
LaTeX, 10 pages, introduction updated for journal submission