Abstract

We propose a measurement scheme that validates the preparation of an -qubit stabilizer state. The scheme involves a measurement of Pauli observables, a priori determined from the stabilizer state and which can be realized using single-qubit gates. Based on the proposed validation scheme, we derive an explicit expression for the worst-case fidelity, i.e., the minimum fidelity between the stabilizer state and any other state consistent with the measured data. We also show that the worst-case fidelity can be certified, with high probability, using copies of the state.

Date

2019

Authors

Amir Kalev, Anastasios Kyrillidis, Norbert M Linke

Journal

Physical Review A

Volume

99

Issue

4

Pages

042337

Publisher

American Physical Society