SFQ counter-based precomputation for large-scale cryogenic VQE machines
<|reference_start|>SFQ counter-based precomputation for large-scale cryogenic VQE machines: The variational quantum eigensolver (VQE) is a promising candidate that brings practical benefits from quantum computing. However, the required bandwidth in/out of a cryostat is a limiting factor to scale cryogenic quantum computers. We propose a tailored counter-based module with single flux quantum circuits in 4-K stage which precomputes a part of VQE calculation and reduces the amount of inter-temperature communication. The evaluation shows that our system reduces the required bandwidth by 97%, and with this drastic reduction, total power consumption is reduced by 93% in the case where 277 VQE programs are executed in parallel on a 10000-qubit machine.<|reference_end|>
@article{ueno2024sfq,
    title={SFQ counter-based precomputation for large-scale cryogenic VQE machines},
    author={Yosuke Ueno, Satoshi Imamura, Yuna Tomida, Teruo Tanimoto, Masamitsu
  Tanaka, Yutaka Tabuchi, Koji Inoue, Hiroshi Nakamura},
    journal={arXiv preprint arXiv:2403.00363},
    year={2024},
    archivePrefix={arXiv},
    eprint={2403.00363},
    primaryClass={quant-ph cs.AR}
}