English

Quantum Implications of Huang's Sensitivity Theorem

Quantum Physics 2020-04-29 v1 Computational Complexity

Abstract

Based on the recent breakthrough of Huang (2019), we show that for any total Boolean function ff, the deterministic query complexity, D(f)D(f), is at most quartic in the quantum query complexity, Q(f)Q(f): D(f)=O(Q(f)4)D(f) = O(Q(f)^4). This matches the known separation (up to log factors) due to Ambainis, Balodis, Belovs, Lee, Santha, and Smotrovs (2017). We also use the result to resolve the quantum analogue of the Aanderaa-Karp-Rosenberg conjecture. We show that if ff is a nontrivial monotone graph property of an nn-vertex graph specified by its adjacency matrix, then Q(f)=Ω(n)Q(f) = \Omega(n), which is also optimal.

Cite

@article{arxiv.2004.13231,
  title  = {Quantum Implications of Huang's Sensitivity Theorem},
  author = {Scott Aaronson and Shalev Ben-David and Robin Kothari and Avishay Tal},
  journal= {arXiv preprint arXiv:2004.13231},
  year   = {2020}
}
R2 v1 2026-06-23T15:08:26.583Z