Error mitigated variational algorithm on a photonic processor

• Main Authors: Borzenkova, O. V, Struchalin, G. I, Kondratyev, I, Moiseevskiy, A, Dyakonov, I. V, Straupe, S. S
• Format: Journal Article
• Language: English
• Published: 07-08-2024
• Subjects: Physics - Quantum Physics
• DOI: 10.48550/arxiv.2311.13985

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.