Quantum computing with nearest neighbor interactions and error rates over 1%

Details Quantum computing with nearest neighbor interactions and error rates over 1% Quantum computing with nearest neighbor interactions and error rates over 1%

2010-09-20

arxiv.org/abs/1009.3686v1

Phys. Rev. A 83, 020302(R) (2011)

Physics

Quantum Physics

4 pages, 8 figures

Scientific paper

10.1103/PhysRevA.83.020302

Large-scale quantum computation will only be achieved if experimentally implementable quantum error correction procedures are devised that can tolerate experimentally achievable error rates. We describe a quantum error correction procedure that requires only a 2-D square lattice of qubits that can interact with their nearest neighbors, yet can tolerate quantum gate error rates over 1%. The precise maximum tolerable error rate depends on the error model, and we calculate values in the range 1.1--1.4% for various physically reasonable models. Even the lowest value represents the highest threshold error rate calculated to date in a geometrically constrained setting, and a 50% improvement over the previous record.

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