Accreditation Against Limited Adversarial Noise

Abstract An accreditation protocol (a variety of quantum verification) is presented, where error is assumed to be adversarial (in contrast to the assumption error is implemented by identical CPTP maps used in previous accreditation protocols)—albeit slightly modified to reflect physically motivated error assumptions. This is achieved by upgrading a pre‐existing accreditation protocol (from [S. Ferracin et al. Phys. Rev. A 104, 042603 (2021)]) to function correctly in the face of adversarial error, with no diminution in efficiency or suitability for near‐term usage.