A Magnetic Resonance Realization of Decoherence-Free Quantum Computation
Quantum Physics
2007-05-23 v2
Abstract
We report the realization, using nuclear magnetic resonance techniques, of the first quantum computer that reliably executes an algorithm in the presence of strong decoherence. The computer is based on a quantum error avoidance code that protects against a class of multiple-qubit errors. The code stores two decoherence-free logical qubits in four noisy physical qubits. The computer successfully executes Grover's search algorithm in the presence of arbitrarily strong engineered decoherence. A control computer with no decoherence protection consistently fails under the same conditions.
Cite
@article{arxiv.quant-ph/0302175,
title = {A Magnetic Resonance Realization of Decoherence-Free Quantum Computation},
author = {Jason E. Ollerenshaw and Daniel A. Lidar and Lewis E. Kay},
journal= {arXiv preprint arXiv:quant-ph/0302175},
year = {2007}
}
Comments
5 pages with 3 figures, revtex4, accepted by Physical Review Letters; v2 minor revisions to content