3 papers
quant-ph2026
A geometric Fano--Procrustes framework for purification-based distances and quantum channels analysis
Tristán M. Osán
In this work we reformulate the Uhlmann purification-overlap optimization and develop a purification-based geometric framework for the analysis of mixed qubit states and qubit chan…
quant-ph2025
A unified fidelity-based framework for quantum speed limits in open quantum systems
Tristán M. Osán, Yanet Álvarez, Mariela Portesi +1
In this work, we investigate the role of functionals of generalized fidelity measures in deriving quantum speed limits (QSLs) within a geometric approach. We establish a general th…
quant-ph2019
Behavior of quantum correlations under nondissipative decoherence by means of the correlation matrix
D. G. Bussandri, T. M. Osán, A. P. Majtey +1
In this paper we use the Fano representation of two-qubit states from which we can identify a correlation matrix containing the information about the classical and quantum correlat…