Characterization of Loss Mechanisms in a Fluxonium Qubit
Characterization of Loss Mechanisms in a Fluxonium Qubit
Using a fluxonium qubit with in situ tunability of its Josephson energy, we characterize its energy relaxation at different flux biases as well as different Josephson energy values. The relaxation rate at qubit energy values, ranging more than 1 order of magnitude around the thermal energy ${k}_{B}T$, can be quantitatively …