@misc{balasubramanian2023exponential,
  title={Exponential speedups for quantum walks in random hierarchical graphs},
  author={Shankar Balasubramanian and Tongyang Li and Aram Harrow},
  year={2023},
  eprint={2307.15062},
  archivePrefix={arXiv},
  primaryClass={quant-ph},
  url={https://arxiv.org/abs/2307.15062}
}