Multilayer Microwave Integrated Quantum Circuits: Part 3

Superconducting quantum circuits provide a promising platform for quantum information processing. Resonant modes found in superconducting enclosures can be engineered to offer superior coherence and a better electromagnetic environment than their planar analogues. Here, we will discuss the Multilayer Microwave Integrated Quantum Circuit (MMIQC). A crucial component of the MMIQC is the realization of a high quality superconducting enclosure. In this talk, we will demonstrate on-chip microwave resonating cavities with quality factors exceeding 300 million and describe their power and temperature dependence. We will discuss factors that may limit the performance of the cavity by placing bounds on intrinsic loss mechanisms.