What makes a good experiment for proof-of-principle QEC?

Abstract

The last few years have seen a dramatic increase in the number of proof-ofprinciple experiments for quantum error correction. The size and scope of these experiments are also increasing, including an example with 48 logical qubits, examples with over 100 physical qubits, and demonstrations of logical gates and magic state preparation. However, the large differences between these experiments makes it hard to compare progress. For this reason, we propose a flexible experiment that could be used for cross-platform comparisons, and look at preliminary results from first experiments with more than 100 qubits and 100 syndrome measurement rounds.