Efficiently improving the performance of noisy quantum computers

Samuele Ferracin; Akel Hashim; Jean-Loup Ville; Ravi Naik; Arnaud Carignan-Dugas; Hammam Qassim; Alexis Morvan; David I. Santiago; Irfan Siddiqi; Joel J. Wallman

doi:10.22331/q-2024-07-15-1410

Efficiently improving the performance of noisy quantum computers

Samuele Ferracin^1,2, Akel Hashim^3,4, Jean-Loup Ville³, Ravi Naik^3,4, Arnaud Carignan-Dugas¹, Hammam Qassim¹, Alexis Morvan^3,4, David I. Santiago^3,4, Irfan Siddiqi^3,4,5, and Joel J. Wallman^1,2

¹Keysight Technologies Canada, Kanata, ON K2K 2W5, Canada
²Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
³Quantum Nanoelectronics Laboratory, Dept. of Physics, University of California at Berkeley, Berkeley, CA 94720, USA
⁴Applied Math and Computational Research Division, Lawrence Berkeley National Lab, Berkeley, CA 94720, USA
⁵Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA 94720, USA

Published:	2024-07-15, volume 8, page 1410
Eprint:	arXiv:2201.10672v5
Doi:	https://doi.org/10.22331/q-2024-07-15-1410
Citation:	Quantum 8, 1410 (2024).

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Abstract

Using near-term quantum computers to achieve a quantum advantage requires efficient strategies to improve the performance of the noisy quantum devices presently available. We develop and experimentally validate two efficient error mitigation protocols named ``Noiseless Output Extrapolation" and ``Pauli Error Cancellation" that can drastically enhance the performance of quantum circuits composed of noisy cycles of gates. By combining popular mitigation strategies such as probabilistic error cancellation and noise amplification with efficient noise reconstruction methods, our protocols can mitigate a wide range of noise processes that do not satisfy the assumptions underlying existing mitigation protocols, including non-local and gate-dependent processes. We test our protocols on a four-qubit superconducting processor at the Advanced Quantum Testbed. We observe significant improvements in the performance of both structured and random circuits, with up to $86\%$ improvement in variation distance over the unmitigated outputs. Our experiments demonstrate the effectiveness of our protocols, as well as their practicality for current hardware platforms.

► BibTeX data

@article{Ferracin2024efficiently,
  doi = {10.22331/q-2024-07-15-1410},
  url = {https://doi.org/10.22331/q-2024-07-15-1410},
  title = {Efficiently improving the performance of noisy quantum computers},
  author = {Ferracin, Samuele and Hashim, Akel and Ville, Jean-Loup and Naik, Ravi and Carignan-Dugas, Arnaud and Qassim, Hammam and Morvan, Alexis and Santiago, David I. and Siddiqi, Irfan and Wallman, Joel J.},
  journal = {{Quantum}},
  issn = {2521-327X},
  publisher = {{Verein zur F{\"{o}}rderung des Open Access Publizierens in den Quantenwissenschaften}},
  volume = {8},
  pages = {1410},
  month = jul,
  year = {2024}
}

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