Ion-trap quantum computers offer a large number of possible qubit couplings, each of which requires individual calibration and can be misconfigured. To enhance the duty cycle of an ion trap, we develop a strategy that diagnoses individual miscalibrated couplings using only log-many tests. This strategy is validated on a commercial ion-trap quantum computer, where we illustrate the process of debugging faulty quantum gates. Our methodology provides a scalable pathway towards fault detections on a larger scale ion-trap quantum computers, confirmed by simulations up to 32 qubits.
@article{arxiv.2108.03708,
title = {Detecting Qubit-coupling Faults in Ion-trap Quantum Computers},
author = {Andrii O. Maksymov and Jason Nguyen and Vandiver Chaplin and Yunseong Nam and Igor L. Markov},
journal= {arXiv preprint arXiv:2108.03708},
year = {2021}
}