Abstract

Zero-noise extrapolation (ZNE) is an increasingly popular technique for mitigating errors in noisy quantum computations without using additional quantum resources. We review the fundamentals of ZNE and propose several improvements to noise scaling and extrapolation, the two key components in the technique. We introduce unitary folding and parameterized noise scaling – digital noise scaling frameworks that can be applied using only gate-level access common to most quantum instruction sets. We also study different extrapolation methods, including a new adaptive protocol that uses a statistical inference framework. Benchmarks of our techniques show error reductions of 18X to 24X over non-mitigated circuits.

Citation

Giurgica-Tiron, Tudor, Yousef Hindy, Ryan LaRose, Andrea Mari, and William J. Zeng. 2020. “Digital Zero Noise Extrapolation for Quantum Error Mitigation.” IEEE International Conference on Quantum Computing and Engineering (QCE).

@inproceedings{GiurgicaTiron2020,
author = {Tudor Giurgica-Tiron and Yousef Hindy and Ryan LaRose and Andrea Mari and William J. Zeng},
year = {2020},
title = {Digital Zero Noise Extrapolation for Quantum Error Mitigation},
booktitle = {IEEE International Conference on Quantum Computing and Engineering (QCE)},
doi = {10.1109/QCE49297.2020.00045},
url = {https://arxiv.org/abs/2005.10921}}