@inproceedings{6b6b1057e41b4453b8b444ff5fa871c0,
title = "Reliable Devices Yield Stable Quantum Computations",
abstract = "Stable quantum computation requires noisy results to remain bounded even in the presence of noise fluctuations. Yet non-stationary noise processes lead to drift in the varying characteristics of a quantum device that can greatly influence the circuit outcomes. Here we address how temporal and spatial variations in noise relate device reliability to quantum computing stability. First, our approach quantifies the differences in statistical distributions of characterization metrics collected at different times and locations using Hellinger distance. We then validate an analytical bound that relates this distance directly to the stability of a computed expectation value. Our demonstration uses numerical simulations with models informed by the washington superconducting transmon device. We find that the stability metric is consistently bounded from above by the corresponding Hellinger distance, which can be cast as a specified tolerance level. These results underscore the significance of reliable quantum computing devices and the impact for stable quantum computation.",
keywords = "device reliability, program stability, spatio-temporal non-stationarity, time-varying quantum noise",
author = "Samudra Dasgupta and Humble, {Travis S.}",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 4th IEEE International Conference on Quantum Computing and Engineering, QCE 2023 ; Conference date: 17-09-2023 Through 22-09-2023",
year = "2023",
doi = "10.1109/QCE57702.2023.10218",
language = "English",
series = "Proceedings - 2023 IEEE International Conference on Quantum Computing and Engineering, QCE 2023",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "223--226",
editor = "Hausi Muller and Yuri Alexev and Andrea Delgado and Greg Byrd",
booktitle = "Proceedings - 2023 IEEE International Conference on Quantum Computing and Engineering, QCE 2023",
}