%0 Journal Article
%@ 0031-9007
%A Varnava, M.
%A Browne, D.E.
%A Rudolph, T.
%D 2006
%F discovery:9339
%J Physical Review Letters
%N 12
%P 120501
%T Loss tolerance in one-way quantum computation via counterfactual error correction
%U https://discovery.ucl.ac.uk/id/eprint/9339/
%V 97
%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.   Comment: 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.