Error correction experiments on cloud quantum computers

Quantum advantage likely requires quantum error correction. Quantum error correction codes, QPU architectures and error syndrome measurement circuits are an active area of research. We demonstrate multiple quantum error correction experiments on publicly available IQM cloud quantum computers including memory, stability and logical operations. Studied architectures include star and square lattice topology. Square lattice is the standard platform for surface code and color code. The star and star lattice architecture enables testing known alternative and novel quantum error correction codes. Logical error rate is reduced by describing error syndrome measurement cycle in a pulse level language instead of gate level. Cloud quantum computers with pulse level access can be used as a reference system for benchmarking. Shared reference platforms will democratize and accelerate research.