Riddhi S. Gupta, Neereja Sundaresan, et al.
Nature
We discuss how the presence of gauge subsystems in the Bacon-Shor code leads to remarkably simple and efficient methods for fault-tolerant error correction (FTEC). Most notably, FTEC does not require entangled ancillary states, and it can be implemented with nearest-neighbor two-qubit measurements. By using these methods, we prove a lower bound on the quantum accuracy threshold, 1.94×10-4 for adversarial stochastic noise, that improves previous lower bounds by nearly an order of magnitude. © 2007 The American Physical Society.
Riddhi S. Gupta, Neereja Sundaresan, et al.
Nature
David P. Divincenzo, Panos Aliferis
Physical Review Letters
Yunong Shi, Christopher Chamberland, et al.
New Journal of Physics
Martin Suchara, Andrew W. Cross, et al.
ISIT 2015