Coherence of Quantum Ensemble as a Dual to Uncertainty for a Single Observable
- Authors: Kronberg D.A.1
-
Affiliations:
- Steklov Mathematical Institute of Russian Academy of Sciences
- Issue: Vol 40, No 10 (2019)
- Pages: 1507-1515
- Section: Article
- URL: https://journals.rcsi.science/1995-0802/article/view/205697
- DOI: https://doi.org/10.1134/S1995080219100160
- ID: 205697
Cite item
Abstract
The coherence of an ensemble of quantum states is considered — a quantity having a similarity with the uncertainty of the quantum observable that arises from the entropic uncertainty relations. We give estimates for the coherence of the ensemble through the uncertainty of the dual observable and the weak uncertainty of the observable through the coherence of the ensemble. It is shown that this numerical characteristic is closely connected with the relative entropy of discord for the corresponding classical-quantum state.
About the authors
D. A. Kronberg
Steklov Mathematical Institute of Russian Academy of Sciences
Author for correspondence.
Email: dmitry.kronberg@gmail.com
Russian Federation, Moscow, 119991