Derives MSE bounds for PEC and CDR under finite shots, revealing CDR-dominant windows scaling as 1/(δ₁²p) and a projection theorem for affine CDR bias removal.
The tested variants use positive channel- specific PEC inverses: N2a haspx :p y :p z = 2 : 1 : 1, N2b uses1 : 1 : 3, and N3 adds sparse correlatedXXandZZtwo-qubit Pauli terms
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Finite-shot operating windows for probabilistic error cancellation and Clifford data regression
Derives MSE bounds for PEC and CDR under finite shots, revealing CDR-dominant windows scaling as 1/(δ₁²p) and a projection theorem for affine CDR bias removal.