David G. Ferguson

Circuit QED with fluxonium qubits: Theory of the dispersive regime

Guanyu Zhu, Jens Koch, J. Koch, 2012, 1210.1605.

Understanding degenerate ground states of a protected quantum circuit in the presence of disorder

Jens Koch, Joshua M. Dempster, D. Schuster, 2014, 1402.7310.