arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0903.1291quant-phcs.CC
收藏

认证的量子查询复杂度

The quantum query complexity of certification

Andris Ambainis, Andrew M. Childs, François Le Gall, Seiichiro Tani

摘要:

我们研究的量子查询复杂性找到一个证书的d-正规,k级平衡NAND公式。直到对数因子,我们证明了查询复杂度对于0-证书是Theta(d^{(k+1)/2}),对于1-证书是Theta(d^{k/2})。特别地,这表明评估这样的公式的零错误量子查询复杂度是O(d^{(k+1)/2})(再次忽略对数因子)。我们的下限依赖于量子对抗方法遵守直和定理的事实。

英文摘要:

We study the quantum query complexity of finding a certificate for a d-regular, k-level balanced NAND formula. Up to logarithmic factors, we show that the query complexity is Theta(d^{(k+1)/2}) for 0-certificates, and Theta(d^{k/2}) for 1-certificates. In particular, this shows that the zero-error quantum query complexity of evaluating such formulas is O(d^{(k+1)/2}) (again neglecting a logarithmic factor). Our lower bound relies on the fact that the quantum adversary method obeys a direct sum theorem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑