Résumé |
A fault-tolerant architecture based on error-corrected qubits requires logical gates and error syndrome
measurements that prevent the spreading of uncorrectable errors. In this talk, I will present a fault-tolerant
construction for gates and parity measurements on a cavity-encoded logical qubit. The scheme uses the
multilevel structure of a transmon ancilla, along with RF-tunable transmon-cavity interactions, to apply a
broad range of operations on a variety of encodings, while protecting the logical qubit against photon loss, as
well as ancilla decay and dephasing. These results present an important step towards fully fault-tolerant
processing of logical qubits. |