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Loss tolerance in one-way quantum computation via counterfactual error correction

Michael Varnava·Daniel E. Browne·Terry Rudolph
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Abstract

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.

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Michael Varnava, Daniel E. Browne, Terry Rudolph. 2007-02-06. Loss tolerance in one-way quantum computation via counterfactual error correction. https://doi.org/10.1103/physrevlett.97.120501

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