@article{youonlyindexoncecrosslayersparseattentio,
  title = {You Only Index Once: Cross-Layer Sparse Attention with Shared Routing},
  author = {Yutao Sun and Yanqi Zhang and Li Dong and Jianyong Wang and Furu Wei},
  year = {2026},
  eprint = {2606.06467},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.06467},
}