Quantum metrics based upon classical Jensen–Shannon divergence

TM Osán, DG Bussandri, PW Lamberti - Physica A: Statistical Mechanics …, 2022 - Elsevier
Jensen–Shannon divergence is an important distinguishability measure between probability
distributions that finds interesting applications within the context of Information Theory. In …

R\'enyi-Holevo inequality from --R\'enyi relative entropies

DG Bussandri, G Rajchel-Mieldzioć… - arXiv preprint arXiv …, 2023 - arxiv.org
We investigate bounds in the transmission of classical information through quantum
systems. Our focus lies in the generalized Holevo theorem, which provides a single-letter …

Quantum Distance Measures Based upon Classical Symmetric Csiszár Divergences

DG Bussandri, TM Osán - Entropy, 2023 - mdpi.com
We introduce a new family of quantum distances based on symmetric Csiszár divergences,
a class of distinguishability measures that encompass the main dissimilarity measures …

Tripartite quantum correlations in XXZ Heisenberg spin chain with Dzyaloshinskii–Moriya interaction

Q Tian, Y Guo, X Chen, S Wang - Quantum Information Processing, 2023 - Springer
Quantum correlations as the information resources play an important role in quantum
computing and information processing. Most of the previous studies on quantum correlation …

Generalized Holevo theorem and distinguishability notions

DG Bussandri, PW Lamberti - Journal of Physics A: Mathematical …, 2020 - iopscience.iop.org
We present a generalization of the Holevo theorem through distance measures between
quantum states, showing that each of these leads to an alternative Holevo theorem. This …

Correlations in Two-Qubit Systems under non-dissipative decoherence

DG Bussandri, TM Osán, PW Lamberti, AP Majtey - Axioms, 2020 - mdpi.com
We built a new set of suitable measures of correlations for bipartite quantum states based
upon a recently introduced theoretical framework [Bussandri et al. in Quantum Inf. Proc. 18 …

Revisiting the behavior of quantum correlations under nondissipative decoherence by means of the correlation matrix

DG Bussandri, TM Osán, AP Majtey… - Physica A: Statistical …, 2020 - Elsevier
The main aim of this work is to investigate the relation between the freezing of Quantum
Discord and the behavior of the actual quantum correlations present in bipartite quantum …

Quantum metrology and quantum correlations

DG Bussandri, PW Lamberti - Handbook of Statistics, 2021 - Elsevier
Given a physical system to define a suitable measurement process on it constitutes one of
the most crucial and challenging issues in physics. According to the particular theory under …