Microwave spectroscopy of a Cooper-pair transistor coupled to a lumped-element resonator
Microwave spectroscopy of a Cooper-pair transistor coupled to a lumped-element resonator
We have studied the microwave response of a single Cooper-pair transistor (CPT) coupled to a lumped-element microwave resonator. The resonance frequency of this circuit, ${f}_{r}$, was measured as a function of the charge ${n}_{g}$ induced on the CPT island by the gate electrode and the phase difference across the CPT, …