English

Entropic uncertainty relations with quantum memory in a multipartite scenario

Quantum Physics 2023-07-26 v1 Mathematical Physics math.MP

Abstract

Entropic uncertainty relations demonstrate the intrinsic uncertainty of nature from an information-theory perspective. Recently, a quantum-memory-assisted entropic uncertainty relation for multiple measurements was proposed by Wu et al.et\ al. [Phys Rev A. 106. 062219 (2022)]. Interestingly, the quantum-memory-assisted entropic uncertainty relation for multiple measurement settings can be further generalized. In this work, we propose two complementary multipartite quantum-memory-assisted entropic uncertainty relations and our lower bounds depend on values of complementarity of the observables, (conditional) von-Neumann entropies, Holevo quantities, and mutual information. As an illustration, we provide several typical cases to exhibit that our bounds are tighter and outperform the previous bounds.

Keywords

Cite

@article{arxiv.2307.13202,
  title  = {Entropic uncertainty relations with quantum memory in a multipartite scenario},
  author = {Qing-Hua Zhang and Shao-Ming Fei},
  journal= {arXiv preprint arXiv:2307.13202},
  year   = {2023}
}

Comments

7 pages, 3 figures

R2 v1 2026-06-28T11:39:14.684Z