Laser-annealing Josephson junctions for yielding scaled-up superconducting quantum processors
@article{Hertzberg2020LaserannealingJJ, 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}, year={2020} }
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
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