Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator

Superconducting circuits present a promising platform with which to realize quantum refrigerator. Motivated by this, we fabricate and perform spectroscopy of gated Cooper-pair box, capacitively coupled two superconducting coplanar-waveguide resonators different frequencies. We experimentally demonstrate the strong coupling charge qubit resonators, ability voltage driving at gigahertz go on discuss how measured device could be modified operate as cyclic refrigerator terminating normal-metal resistors acting heat baths.