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Title: A frequency and sensitivity tunable microresonator array for high-speed quantum processor readout

Abstract

Superconducting microresonators have been successfully utilized as detection elements for a wide variety of applications. With multiplexing factors exceeding 1000 detectors per transmission line, they are the most scalable low-temperature detector technology demonstrated to date. For high-throughput applications, fewer detectors can be coupled to a single wire but utilize a larger per-detector bandwidth. For all existing designs, fluctuations in fabrication tolerances result in a non-uniform shift in resonance frequency and sensitivity, which ultimately limits the efficiency of bandwidth utilization. Here, we present the design, implementation, and initial characterization of a superconducting microresonator readout integrating two tunable inductances per detector. We demonstrate that these tuning elements provide independent control of both the detector frequency and sensitivity, allowing us to maximize the transmission line bandwidth utilization. Finally, we discuss the integration of these detectors in a multilayer fabrication stack for high-speed readout of the D-Wave quantum processor, highlighting the use of control and routing circuitry composed of single-flux-quantum loops to minimize the number of control wires at the lowest temperature stage.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]; ; ;  [2];
  1. D-Wave Systems, Inc., Burnaby, British Columbia V5G 4M9 (Canada)
  2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)
Publication Date:
OSTI Identifier:
22494864
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 119; Journal Issue: 1; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONTROL; D WAVES; DESIGN; DETECTION; EFFICIENCY; FABRICATION; FLUCTUATIONS; INDUCTANCE; LAYERS; POWER TRANSMISSION LINES; READOUT SYSTEMS; SENSITIVITY; TEMPERATURE RANGE 0065-0273 K; WIRES

Citation Formats

Whittaker, J. D., E-mail: jwhittaker@dwavesys.com, Swenson, L. J., Volkmann, M. H., Spear, P., Altomare, F., Berkley, A. J., Bunyk, P., Harris, R., Hilton, J. P., Hoskinson, E., Johnson, M. W., Ladizinsky, E., Lanting, T., Oh, T., Perminov, I., Tolkacheva, E., Yao, J., Bumble, B., Day, P. K., Eom, B. H., and others, and. A frequency and sensitivity tunable microresonator array for high-speed quantum processor readout. United States: N. p., 2016. Web. doi:10.1063/1.4939161.
Whittaker, J. D., E-mail: jwhittaker@dwavesys.com, Swenson, L. J., Volkmann, M. H., Spear, P., Altomare, F., Berkley, A. J., Bunyk, P., Harris, R., Hilton, J. P., Hoskinson, E., Johnson, M. W., Ladizinsky, E., Lanting, T., Oh, T., Perminov, I., Tolkacheva, E., Yao, J., Bumble, B., Day, P. K., Eom, B. H., & others, and. A frequency and sensitivity tunable microresonator array for high-speed quantum processor readout. United States. https://doi.org/10.1063/1.4939161
Whittaker, J. D., E-mail: jwhittaker@dwavesys.com, Swenson, L. J., Volkmann, M. H., Spear, P., Altomare, F., Berkley, A. J., Bunyk, P., Harris, R., Hilton, J. P., Hoskinson, E., Johnson, M. W., Ladizinsky, E., Lanting, T., Oh, T., Perminov, I., Tolkacheva, E., Yao, J., Bumble, B., Day, P. K., Eom, B. H., and others, and. 2016. "A frequency and sensitivity tunable microresonator array for high-speed quantum processor readout". United States. https://doi.org/10.1063/1.4939161.
@article{osti_22494864,
title = {A frequency and sensitivity tunable microresonator array for high-speed quantum processor readout},
author = {Whittaker, J. D., E-mail: jwhittaker@dwavesys.com and Swenson, L. J. and Volkmann, M. H. and Spear, P. and Altomare, F. and Berkley, A. J. and Bunyk, P. and Harris, R. and Hilton, J. P. and Hoskinson, E. and Johnson, M. W. and Ladizinsky, E. and Lanting, T. and Oh, T. and Perminov, I. and Tolkacheva, E. and Yao, J. and Bumble, B. and Day, P. K. and Eom, B. H. and others, and},
abstractNote = {Superconducting microresonators have been successfully utilized as detection elements for a wide variety of applications. With multiplexing factors exceeding 1000 detectors per transmission line, they are the most scalable low-temperature detector technology demonstrated to date. For high-throughput applications, fewer detectors can be coupled to a single wire but utilize a larger per-detector bandwidth. For all existing designs, fluctuations in fabrication tolerances result in a non-uniform shift in resonance frequency and sensitivity, which ultimately limits the efficiency of bandwidth utilization. Here, we present the design, implementation, and initial characterization of a superconducting microresonator readout integrating two tunable inductances per detector. We demonstrate that these tuning elements provide independent control of both the detector frequency and sensitivity, allowing us to maximize the transmission line bandwidth utilization. Finally, we discuss the integration of these detectors in a multilayer fabrication stack for high-speed readout of the D-Wave quantum processor, highlighting the use of control and routing circuitry composed of single-flux-quantum loops to minimize the number of control wires at the lowest temperature stage.},
doi = {10.1063/1.4939161},
url = {https://www.osti.gov/biblio/22494864}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 1,
volume = 119,
place = {United States},
year = {Thu Jan 07 00:00:00 EST 2016},
month = {Thu Jan 07 00:00:00 EST 2016}
}