104 citations · 788 across the 41 of their papers we have counts for
6 papers · 2 filters
Non-transverse factorizing fields and entanglement in finite spin systems
M. Cerezo, R. Rossignoli, N. Canosa
We determine the conditions for the existence of non-transverse factorizing magnetic fields in general spin arrays with anisotropic XYZ couplings of arbitrary range. It is first sh…
Exact dynamics and squeezing in two harmonic modes coupled through angular momentum
N. Canosa, Swapan Mandal, R. Rossignoli
We investigate the exact dynamics of a system of two independent harmonic oscillators coupled through their angular momentum. The exact analytic solution of the equations of motion…
Quantum discord and information deficit in spin chains
N. Canosa, L. Ciliberti, R. Rossignoli
We examine the behavior of quantum correlations of spin pairs in a finite anisotropic spin chain immersed in a transverse magnetic field, through the analysis of the quantum d…
Generalized non-additive entropies and quantum entanglement
N. Canosa, R. Rossignoli
We examine the inference of quantum density operators from incomplete information by means of the maximization of general non-additive entropic forms. Extended thermodynamic relati…
Violation of majorization relations in entangled states and its detection by means of generalized entropic forms
R. Rossignoli, N. Canosa
We examine the violation of the majorization relations between the eigenvalues of the full and reduced density operators of entangled states of composite systems and its detection…
Generalized entropic criterion for separability
R. Rossignoli, N. Canosa
We discuss the entropic criterion for separability of compound quantum systems for general non-additive entropic forms based on arbitrary concave functions . For any separable s…