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Title: 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 10{sup 4} 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.

Authors:
; ; ; ; ;  [1]
  1. Department of Physics, University Of Wisconsin-Madison, 1150 University Avenue, Madison, Wisconsin 53706 (United States)
Publication Date:
OSTI Identifier:
22590467
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 9; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMS; COPPER; ELECTRIC DIPOLES; ELECTRIC FIELDS; ELECTRIC POTENTIAL; ELECTRODES; FILMS; HEATING; QUALITY FACTOR; QUANTUM ELECTRODYNAMICS; RESONATORS; SUPERCONDUCTORS; TRAPPING; VISIBLE RADIATION; WAVEGUIDES

Citation Formats

Beck, M. A., E-mail: mabeck2@wisc.edu, Isaacs, J. A., Booth, D., Pritchard, J. D., Saffman, M., and McDermott, R. Optimized coplanar waveguide resonators for a superconductor–atom interface. United States: N. p., 2016. Web. doi:10.1063/1.4962172.
Beck, M. A., E-mail: mabeck2@wisc.edu, Isaacs, J. A., Booth, D., Pritchard, J. D., Saffman, M., & McDermott, R. Optimized coplanar waveguide resonators for a superconductor–atom interface. United States. doi:10.1063/1.4962172.
Beck, M. A., E-mail: mabeck2@wisc.edu, Isaacs, J. A., Booth, D., Pritchard, J. D., Saffman, M., and McDermott, R. Mon . "Optimized coplanar waveguide resonators for a superconductor–atom interface". United States. doi:10.1063/1.4962172.
@article{osti_22590467,
title = {Optimized coplanar waveguide resonators for a superconductor–atom interface},
author = {Beck, M. A., E-mail: mabeck2@wisc.edu and Isaacs, J. A. and Booth, D. and Pritchard, J. D. and Saffman, M. and McDermott, R.},
abstractNote = {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 10{sup 4} 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.},
doi = {10.1063/1.4962172},
journal = {Applied Physics Letters},
number = 9,
volume = 109,
place = {United States},
year = {Mon Aug 29 00:00:00 EDT 2016},
month = {Mon Aug 29 00:00:00 EDT 2016}
}