Matrix discrepancy from Quantum communication
Matrix discrepancy from Quantum communication
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量子通信的矩阵差异
DOI:
10.1145/3519935.3519954
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Shetty, Abhishek
中科院分区:
文献类型:
--
作者:
Hopkins, Samuel B.;Raghavendra, Prasad;Shetty, Abhishek
We develop a novel connection between discrepancy minimization and (quantum) communication complexity. As an application, we resolve a substantial special case of theMatrix Spencerconjecture. In particular, we show that for every collection of symmetricn×nmatricesA1,…,Anwith ||Ai|| ≤ 1 and ||Ai||F≤n1/4there exist signsx∈ { ± 1}nsuch that the maximum eigenvalue of ∑i≤nxiAiis at mostO(√n). We give a polynomial-time algorithm based on partial coloring and semidefinite programming to find suchx.Our techniques open a new avenue to use tools from communication complexity and information theory to study discrepancy. The proof of our main result combines a simple compression scheme for transcripts of repeated (quantum) communication protocols with quantum state purification, the Holevo bound from quantum information, and tools from sketching and dimensionality reduction. Our approach also offers a promising avenue to resolve the Matrix Spencer conjecture completely – we show it is implied by a natural conjecture in quantum communication complexity.
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DOI:
10.1137/141000282
发表时间:
2014
期刊:
2014 IEEE 55th Annual Symposium on Foundations of Computer Science
影响因子:
--
作者:
T. Rothvoss
通讯作者:
T. Rothvoss
DOI:
10.1016/j.aim.2020.107366
发表时间:
2019
期刊:
ArXiv
影响因子:
--
作者:
Rasmus Kyng;K. Luh;Zhao Song
通讯作者:
Zhao Song
影响因子:
1.6
作者:
Lovett, Shachar;Meka, Raghu
通讯作者:
Meka, Raghu
DOI:
10.1137/1.9781611975994.143
发表时间:
2020
期刊:
Proceedings of the Annual ACMSIAM Symposium on Discrete Algorithms
影响因子:
--
作者:
Reis, Victor;Rothvoss, Thomas
通讯作者:
Rothvoss, Thomas
DOI:
10.1145/3519935.3519967
发表时间:
2021
期刊:
Proceedings of the 54th Annual ACM SIGACT Symposium on Theory of Computing
影响因子:
--
作者:
D. Dadush;Haotian Jiang;Victor Reis
通讯作者:
Victor Reis