We present a benchmark for noisy intermediate-scale quantum computers that leverages quantum chemistry calculations for metal hydrides LiH, NaH, KH, RbH. Our benchmark calculations include variational eigenesolvers with reduced unitary coupled cluster, quantum imaginary time propagation and a scheme for embedding quantum electronic structure calculations in Hartree-Fock wave function that allows active space reduction. Our results on superconducting devices from IBM and Rigetti demonstrate characteristically high noise level present in near-term superconducting hardware, but provide a relevant baseline for future improvement of the underlying hardware, and a means for comparison across near-term hardware types. We also demonstrate how to reduce the noise in post processing with specific error mitigation techniques.

Quantum chemistry benchmark for near-term quantum computing

ACS Spring Meeting 2021

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