%A M Varnava %A DE Browne %A T Rudolph %X 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. %O © 2006 The American Physical Society %D 2006 %T Loss tolerance in one-way quantum computation via counterfactual error correction %K DEVICES %L discovery143913 %V 97 %J PHYS REV LETT %N 12 %I AMERICAN PHYSICAL SOC