Figure 2
(a) An illustration of the architecture of a cavity-QED system named a two-cavity and three-qubit (2C3Q) architecture. The two high-Q cavities (B and C) posses an ECS and the outer readout resonators (L and R) are used for measurement of qubits and cavity fields. If the outer qubits (A and X) are fluxonium75,76,77, the self-Kerr distortion on the cavities might be reducible by an appropriate external flux Φext (JJ: Josephson-Junction). (b) It shows that the self-Kerr effect K of a cavity almost linearly changes with respect to the tunable external flux Φext in a fluxonium.
