Protection layers on a superconducting microwave resonator toward a hybrid quantum system
Abstract
We propose a protection scheme of a superconducting microwave resonator to realize a hybrid quantum system, where cold neutral atoms are coupled with a single microwave photon through magnetic dipole interaction at an interface inductor. The evanescent field atom trap, such as a waveguide/nanofiber atom trap, brings both surface-scattered photons and absorption-induced broadband blackbody radiation which result in quasiparticles and a low quality factor at the resonator. A proposed multiband protection layer consists of pairs of two dielectric layers and a thin nanogrid conductive dielectric layer above the interface inductor. We show numerical simulations of quality factors and reflection/absorption spectra, indicating that the proposed multilayer structure can protect a lumped-element microwave resonator from optical photons and blackbody radiation while maintaining a reasonably high quality factor.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 06, 2015
- Source ID
- 10.1063/1.4932137
Entities
People
- Dong Hun Park
- Jongmin Lee
Organizations
- Army Research Office
- Sandia National Laboratories
- University of Maryland