Experimentally efficient methods for estimating the performance of quantum measurements

Abstract

Efficient methods for characterizing the performance of quantum measurements are important in the experimental quantum sciences. Ideally, one requires both a physically relevant distinguishability measure between measurement operations and a well-defined experimental procedure for estimating the distinguishability measure. Here, we propose the average measurement fidelity and error between quantum measurements as distinguishability measures. We present protocols for obtaining bounds on these quantities that are both estimable using experimentally accessible quantities and scalable in the size of the quantum system. We explain why the bounds should be valid in large generality and illustrate the method via numerical examples.

20 pages, 1 figure. Expanded details and typos corrected. Accepted version

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Cited by in corpus (4)

• The effect of noise correlations on randomized benchmarking
• Implementing and characterizing precise multi-qubit measurements
• A Practical Introduction to Benchmarking and Characterization of Quantum Computers
• Efficient diagnostics for quantum error correction