We present an error mitigation scheme which corrects readout errors on Noisy Intermediate-Scale Quantum (NISQ) computers [1,2]. After a short review of applying the method to one qubit, we proceed to discuss the case when correlations between different qubits occur. We demonstrate how the readout error can be mitigated in this case. By performing experiments on IBMQ hardware, we show that such correlations do not have a strong effect on the results, justifying to neglect them.
@article{arxiv.2111.08551,
title = {Using classical bit-flip correction for error mitigation including 2-qubit correlations},
author = {Constantia Alexandrou and Lena Funcke and Tobias Hartung and Karl Jansen and Stefan Kuehn and Georgios Polykratis and Paolo Stornati and Xiaoyang Wang},
journal= {arXiv preprint arXiv:2111.08551},
year = {2022}
}
Comments
9 pages, 3 figures, Proceedings of the 38th International Symposium on Lattice Field Theory, 26th-30th July 2021, Zoom/Gather@Massachusetts Institute of Technology