81 citations · 544 across the 28 of their papers we have counts for
19 papers · 1 filter
Optimal quantum teleportation protocols for fixed average fidelity
Fabricio Toscano, Diego G. Bussandri, Gustavo M. Bosyk +2
We demonstrate that among all quantum teleportation protocols giving rise to the same average fidelity, those with aligned Bloch vectors between input and output states exhibit the…
Revisiting maximal average fidelity of teleportation
D. G. Bussandri, M. Portesi, A. P. Majtey
We obtain the maximal average fidelity corresponding to the standard quantum teleportation protocol for an arbitrary isotropic distribution of input states and an arbitrary resourc…
Fluctuation and dissipation in memoryless open quantum evolutions
Fabricio Toscano, Gustavo M. Bosyk, Steeve Zozor +1
Von Neumann entropy rate for open quantum systems is, in general, written in terms of entropy production and entropy flow rates, encompassing the second law of thermodynamics. When…
-Deformed quantum and classical mechanics for a system with position-dependent effective mass
Bruno G. da Costa, Ignacio S. Gomez, Mariela Portesi
We present the quantum and classical mechanics formalisms for a particle with position-dependent mass in the context of a deformed algebraic structure (named -algebra), motivate…
Entropic analysis of the quantum oscillator with a minimal length
David Puertas Centeno, Mariela Portesi
The well-known Heisenberg--Robertson uncertainty relation for a pair of noncommuting observables, is expressed in terms of the product of variances and the commutator among the ope…
Generalized entropies in quantum and classical statistical theories
M. Portesi, F. Holik, P. W. Lamberti +3
We study a version of the generalized (h, ϕ)-entropies, introduced by Salicrú et al, for a wide family of probabilistic models that includes quantum and classical statistical theor…
Unified entropic measures of quantum correlations induced by local measurements
G. M. Bosyk, G. Bellomo, S. Zozor +2
We introduce quantum correlations measures based on the minimal change in unified entropies induced by local rank-one projective measurements, divided by a factor that depends on t…
A family of generalized quantum entropies: definition and properties
G. M. Bosyk, S. Zozor, F. Holik +2
We present a quantum version of the generalized -entropies, introduced by Salicrú \textit{et al.} for the study of classical probability distributions. We establish their ba…
Gaussian ensembles distributions from mixing quantum systems
Ignacio S. Gomez, Mariela Portesi
In the context of the mixing dynamical systems we present a derivation of the Gaussian ensembles distributions from mixing quantum systems having a classical analog that is mixing.…
Entropic measures of joint uncertainty: effects of lack of majorization
Alfredo Luis, Gustavo Martín Bosyk, Mariela Portesi
We compute Rényi entropies for the statistics of a noisy simultaneous observation of two complementary observables in two-dimensional quantum systems. The relative amount of uncert…
Geometric approach to extend Landau-Pollak uncertainty relations for positive operator-valued measures
G. M. Bosyk, S. Zozor, M. Portesi +2
We provide a twofold extension of Landau--Pollak uncertainty relations for mixed quantum states and for positive operator-valued measures, by recourse to geometric considerations.…
A semiclassical condition for chaos based on Pesin theorem
Ignacio Gomez, Marcelo Losada, Sebastian Fortin +2
A semiclassical method to determine if the classical limit of a quantum system is chaotic or not, based on Pesin theorem, is presented. The method is applied to a phenomenological…
A geometric formulation of uncertainty principle
G. M. Bosyk, T. M. Osán, P. W. Lamberti +1
A geometric approach to formulate the uncertainty principle between quantum observables acting on an -dimensional Hilbert space is proposed. We consider the fidelity between a d…
On a generalized entropic uncertainty relation in the case of the qubit
Steeve Zozor, Gustavo Martín Bosyk, Mariela Portesi
We revisit generalized entropic formulations of the uncertainty principle for an arbitrary pair of quantum observables in two-dimensional Hilbert space. Rényi entropy is used as un…
On the connection between Complementarity and Uncertainty Principles in the Mach-Zehnder interferometric setting
G. M. Bosyk, M. Portesi, F. Holik +1
We revisit, in the framework of Mach-Zehnder interferometry, the connection between the complementarity and uncertainty principles of quantum mechanics. Specifically, we show that,…
Position-momentum uncertainty relations based on moments of arbitrary order
Steeve Zozor, Mariela Portesi, Pablo Sanchez-Moreno +1
The position-momentum uncertainty-like inequality based on moments of arbitrary order for d-dimensional quantum systems, which is a generalization of the celebrated Heisenberg form…
Comment on "Improved bounds on entropic uncertainty relations"
G. M. Bosyk, M. Portesi, A. Plastino +1
We provide an analytical proof of the entropic uncertainty relations presented by de Vicente and Sanchez-Ruiz in [Phys. Rev. A 77, 042110 (2008)] and also show that the replacement…
Collision entropy and optimal uncertainty
G. M. Bosyk, M. Portesi, A. Plastino
We propose an alternative measure of quantum uncertainty for pairs of arbitrary observables in the 2-dimensional case, in terms of collision entropies. We derive the optimal lower…
Natural Metric for Quantum Information Theory
P. W. Lamberti, M. Portesi, J. Sparacino
We study in detail a very natural metric for quantum states. This new proposal has two basic ingredients: entropy and purification. The metric for two mixed states is defined as th…