Sequential measurements, disturbance and property testing

21 Oct 2016 Harrow Aram W. Lin Cedric Yen-Yu Montanaro Ashley

We describe two procedures which, given access to one copy of a quantum state and a sequence of two-outcome measurements, can distinguish between the case that at least one of the measurements accepts the state with high probability, and the case that all of the measurements have low probability of acceptance. The measurements cannot simply be tried in sequence, because early measurements may disturb the state being tested... (read more)

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