Our study demonstrates successful error mitigation of indistinguishability-related noise in a quantum photonic processor through the application of the zero-noise extrapolation technique. By measuring observable values at different error levels, we were able to extrapolate towards a noise-free regime. We examined the impact of partial distinguishability of photons in a two-qubit processor implementing the variational quantum eigensolver for a Schwinger Hamiltonian. Our findings highlight the effectiveness of the extrapolation technique in mitigating indistinguishability-related noise and improving the accuracy of Hamiltonian eigenvalue estimation.
@article{arxiv.2311.13985,
title = {Error mitigated variational algorithm on a photonic processor},
author = {O. V. Borzenkova and G. I. Struchalin and I. Kondratyev and A. Moiseevskiy and I. V. Dyakonov and S. S. Straupe},
journal= {arXiv preprint arXiv:2311.13985},
year = {2024}
}