Michael Varnava, Daniel E. Browne, Terry Rudolph
Published 2005-07-04, updated 2007-02-06Version 3
We introduce a scheme for fault tolerantly dealing with losses (or other "leakage" errors) in cluster state computation that can tolerate up to 50% qubit loss. This is achieved passively using an adaptive strategy of measurement - no coherent measurements or coherent correction is required. Since the scheme relies on inferring information about what would have been the outcome of a measurement had one been able to carry it out, we call this "counterfactual" error correction.
Comments: Published version - much revised and with a new title. Here we now focus solely on the general aspects of the protocol - a much expanded and improved discussion of its application in linear optical quantum computation can now be found in quant-ph/0702044
Journal: Phys. Rev. Lett. 97, 120501 (2006)
Real-time measurement error mitigation for one-way quantum computation
Unifying Quantum Computation with Projective Measurements only and One-Way Quantum Computation
Phase transition of computational power in the resource states for one-way quantum computation
