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16 papers · 2 filters
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…
New features of quantum discord uncovered by q-entropies
A. P. Majtey, A. R. Plastino, A. Plastino
The notion of quantum discord introduced by Ollivier and Zurek [Phys. Rev. Lett 88, 017901 (2001)] (see also Henderson and Vedral [J. Phys. A 34, 6899 (2001)]) has attracted increa…
On the lattice structure of probability spaces in quantum mechanics
Federico Holik, César Massri, Leandro Zuberman +1
Let C be the set of all possible quantum states. We study the convex subsets of C with attention focused on the lattice theoretical structure of these convex subsets and, as a resu…
Quantum correlations and least disturbing local measurements
R. Rossignoli, N. Canosa, L. Ciliberti
We examine the evaluation of the minimum information loss due to an unread local measurement in mixed states of bipartite systems, for a general entropic form. Such quantity provid…