Speaker
Description
Quantum technologies based on superconducting circuits have advanced rapidly in recent years. Recent progress has increasingly underscored the importance of materials and microscopic loss mechanisms, particularly dielectric loss and two-level-system physics, as planar superconducting qubits enter the millisecond regime. Advances in these directions have also driven further improvements in high-Q three-dimensional superconducting cavities for quantum applications. Their exceptional quality factors and low loss enable applications such as the characterization of interface dielectric loss, long-lived quantum memories, and searches for dark photon dark matter.
In this talk, I will present our efforts to improve the quality factor of three-dimensional superconducting cavities and discuss experiments on bosonic quantum error correction in a cavity-transmon architecture, where logical information is encoded in cavity Fock states and their superpositions.