Benchmarking of quantum processors with random circuits
Quantum processors with sizes in the 10-100 qubit range are now increasingly
common. However, with increased size comes increased complexity for
benchmarking. The effectiveness of a given device may vary greatly between
different tasks, and will not always be easy to predict from single and two
qubit gate fidelities. For this reason, it is important to assess processor
quality for a range of important tasks. In this work we propose and implement
tests based on random quantum circuits. These are used to evaluate multiple
different superconducting qubit devices, with sizes from 5 to 19 qubits, from
two hardware manufacturers: IBM Research and Rigetti. The data is analyzed to
give a quantitive description of how the devices perform. We also describe how
it can be used for a qualititive description accessible to the layperson, by
being played as a game.
James R. Wootton