0507036v3

related topics
{qubit, qubits, gate}
{error, code, errors}
{state, phys, rev}
{state, algorithm, problem}
{measurement, state, measurements}
{alice, bob, state}
{photon, photons, single}
{states, state, optimal}
{let, theorem, proof}
{cos, sin, state}

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

Michael Varnava, Daniel E. Browne, Terry Rudolph

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.

oai_identifier:
oai:arXiv.org:quant-ph/0507036
categories:
quant-ph
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
doi:
10.1103/PhysRevLett.97.120501
arxiv_id:
quant-ph/0507036
journal_ref:
Phys. Rev. Lett. 97, 120501 (2006)
created:
2005-07-04
updated:
2007-02-05

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