3 years ago

Ultrahigh Error Threshold for Surface Codes with Biased Noise

Ultrahigh Error Threshold for Surface Codes with Biased Noise
David K. Tuckett, Stephen D. Bartlett, Steven T. Flammia
We show that a simple modification of the surface code can exhibit an enormous gain in the error correction threshold for a noise model in which Pauli $Z$ errors occur more frequently than $X$ or $Y$ errors. Such biased noise, where dephasing dominates, is ubiquitous in many quantum architectures. I...

Publisher URL: http://link.aps.org/doi/10.1103/PhysRevLett.120.050505

DOI: 10.1103/PhysRevLett.120.050505

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