Corpus ID: 221447721

Laser-annealing Josephson junctions for yielding scaled-up superconducting quantum processors

  title={Laser-annealing Josephson junctions for yielding scaled-up superconducting quantum processors},
  author={J. Hertzberg and E. Zhang and S. Rosenblatt and E. Magesan and J. Smolin and Jeng-Bang Yau and Vivek P. Adiga and M. Sandberg and M. Brink and J. Chow and J. Orcutt},
  journal={arXiv: Quantum Physics},
  • J. Hertzberg, E. Zhang, +8 authors J. Orcutt
  • Published 2020
  • Physics
  • arXiv: Quantum Physics
  • As superconducting quantum circuits scale to larger sizes, the problem of frequency crowding proves a formidable task. Here we present a solution for this problem in fixed-frequency qubit architectures. By systematically adjusting qubit frequencies post-fabrication, we show a nearly ten-fold improvement in the precision of setting qubit frequencies. To assess scalability, we identify the types of 'frequency collisions' that will impair a transmon qubit and cross-resonance gate architecture… CONTINUE READING
    3 Citations

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