Physical Review X paper on Fluxonium Symmetries published

Quantum circuits present a powerful framework for achieving new functionality by combining circuit elements into larger networks. However achieving quantitative modeling of large quantum circuits such as fluxonium, is hampered by non-linearity, interactions and a large number of degrees of freedom. In our paper we make use of approximate Unitary and Symmetric group symmetries to […]

New Phys. Rev. B article on Fluxonium Qubits in the Dispersive Regime

  In circuit QED, protocols for quantum gates and readout of superconducting qubits often rely on the dispersive regime, reached when the qubit-photon detuning $Delta$ is large compared to their mutual coupling strength. For qubits including the Cooper-pair box and transmon, selection rules dramatically restrict the contributions to dispersive level shifts $chi$. By contrast, without […]