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As a variety of quantum computing models and platforms become available,methods for assessing and comparing the performance of these devices are ofincreasing interest and importance. Despite being built of the same fundamentalcomputational unit, radically different approaches have emerged forcharacterizing the performance of qubits in gate-based and quantum annealingcomputers, limiting and complicating consistent cross-platform comparisons. Tofill this gap, this work proposes a single-qubit protocol (Q-RBPN) formeasuring some basic performance characteristics of individual qubits in bothmodels of quantum computation. The proposed protocol scales to large quantumcomputers with thousands of qubits and provides insights into the distributionof qubit properties within a particular hardware device and across families ofdevices. The efficacy of the Q-RBPN protocol is demonstrated through theanalysis of more than 300 gate-based qubits spanning eighteen machines and 2000annealing-based qubits from one machine, revealing some unexpected differencesin qubit performance. Overall, the proposed Q-RBPN protocol provides a newplatform-agnostic tool for assessing the performance of a wide range ofemerging quantum computing devices.

Single-Qubit Cross Platform Comparison of Quantum Computing Hardware