Protecting Quantum Information with Entanglement and Noisy Optical Modes
Quantum Physics
2009-10-28 v1
Abstract
We incorporate active and passive quantum error-correcting techniques to protect a set of optical information modes of a continuous-variable quantum information system. Our method uses ancilla modes, entangled modes, and gauge modes (modes in a mixed state) to help correct errors on a set of information modes. A linear-optical encoding circuit consisting of offline squeezers, passive optical devices, feedforward control, conditional modulation, and homodyne measurements performs the encoding. The result is that we extend the entanglement-assisted operator stabilizer formalism for discrete variables to continuous-variable quantum information processing.
Cite
@article{arxiv.0807.3616,
title = {Protecting Quantum Information with Entanglement and Noisy Optical Modes},
author = {Mark M. Wilde and Todd A. Brun},
journal= {arXiv preprint arXiv:0807.3616},
year = {2009}
}
Comments
7 pages, 1 figure