Engineering cryogenic setups for 100-qubit scale superconducting circuit systems

S. Krinner*, S. Storz, P. Kurpiers, P. Magnard, J. Heinsoo, R. Keller, J. Lutolf, C. Eichler, A. Wallraff

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A robust cryogenic infrastructure in form of a wired, thermally optimized dilution refrigerator is essential for solid-state based quantum processors. Here, we engineer a cryogenic setup, which minimizes passive and active heat loads, while guaranteeing rapid qubit control and readout. We review design criteria for qubit drive lines, flux lines, and output lines used in typical experiments with superconducting circuits and describe each type of line in detail. The passive heat load of stainless steel and NbTi coaxial cables and the active load due to signal dissipation are measured, validating our robust and extensible concept for thermal anchoring of attenuators, cables, and other microwave components. Our results are important for managing the heat budget of future large-scale quantum computers based on superconducting circuits.

Original languageEnglish
Article number2
Number of pages29
JournalEPJ Quantum Technology
Volume6
DOIs
Publication statusPublished - 28 May 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • DILUTION REFRIGERATOR
  • QUANTUM

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