Optimized coplanar waveguide resonators for a superconductor–atom interface
Abstract
We describe the design and characterization of superconducting coplanar waveguide cavities tailored to facilitate strong coupling between superconducting quantum circuits and single trapped Rydberg atoms. For initial superconductor–atom experiments at 4.2 K, we show that resonator quality factors above 104 can be readily achieved. Furthermore, we demonstrate that the incorporation of thick-film copper electrodes at a voltage antinode of the resonator provides a route to enhance the zero-point electric fields of the resonator in a trapping region that is 40 μm above the chip surface, thereby minimizing chip heating from scattered trap light. The combination of high resonator quality factor and strong electric dipole coupling between the resonator and the atom should make it possible to achieve the strong coupling limit of cavity quantum electrodynamics with this system.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 29, 2016
- Source ID
- 10.1063/1.4962172
Entities
People
- D. Booth
- J. A. Isaacs
- Jonathan D. Pritchard
- M. A. Beck
- M. Saffman
- R. Mcdermott
Organizations
- Army Research Office
- National Science Foundation
- University of Wisconsin–Madison