Measuring and Suppressing Quantum State Leakage in a Superconducting Qubit
Measuring and Suppressing Quantum State Leakage in a Superconducting Qubit
Leakage errors occur when a quantum system leaves the two-level qubit subspace. Reducing these errors is critically important for quantum error correction to be viable. To quantify leakage errors, we use randomized benchmarking in conjunction with measurement of the leakage population. We characterize single qubit gates in a superconducting qubit, …