Multi-qubit correlated quasiparticle transitions in large array of tantalum transmon qubits: Part II

Quantum error correction is a crucial aspect in realizing a universal quantum computer. Ensuring errors are uncorrelated in both space and time is a significant requirement. However, recent studies have revealed correlated errors, such as charge noise, two-level-system drift, and energy relaxation in superconducting qubits, induced by cosmic rays. This work focuses on observing correlated errors related to quasiparticle transitions in a large array of tantalum transmon qubits. The results demonstrate that multi-qubit correlated quasiparticle transition events are more frequent than multi-qubit correlated energy relaxation events, affirming their association with quasiparticle bursts. Interestingly, the average rate of multi-qubit correlated energy relaxation events in tantalum qubits was found to be smaller than that in aluminum qubits, possibly attributed to the stronger electron-phonon interaction in tantalum. Basing ourselves on Part I, Part II we peresent the efficience of the quasiparticle transitions as detectors of burst correlated errors, show the result of errors mitigation in tantalum film and signals of burst correlated quasiparticle transitions.