472 citations
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7 papers · 1 filter
Effective one-body dynamics in multiple-quantum NMR experiments
E. Rufeil Fiori, C. M. Sanchez, F. Y. Oliva +2
A suitable NMR experiment in a one-dimensional dipolar coupled spin system allows one to reduce the natural many-body dynamics into effective one-body dynamics. We verify this in a…
Dynamical regimes of a quantum swap gate beyond the Fermi Golden Rule
Axel D. Dente, Raul A. Bustos-Marun, Horacio M. Pastawski
We discuss how the bath's memory affects the dynamics of a swap gate. We present an exactly solvable model that shows various dynamical transitions when treated beyond the Fermi Go…
Jensen Shannon divergence as a measure of the degree of entanglement
A. P. Majtey, A. Borras, M. Casas +2
The notion of distance in Hilbert space is relevant in many scenarios. In particular, distances between quantum states play a central role in quantum information theory. An appropr…
On the metric character of the quantum Jensen-Shannon divergence
P. W. Lamberti, A. P. Majtey, A. Borras +2
In a recent paper, the generalization of the Jensen Shannon divergence (JSD) in the context of quantum theory has been studied (Phys. Rev. A 72, 052310 (2005)). This distance betwe…
Quantum parallelism as a tool for ensemble spin dynamics calculations
Gonzalo A. Alvarez, Ernesto P. Danieli, Patricia R. Levstein +1
Efficient simulations of quantum evolutions of spin-1/2 systems are relevant for ensemble quantum computation as well as in typical NMR experiments. We propose an efficient method…
Two-spin subsystem entanglement in spin 1/2 rings with long range interactions
M. Gaudiano, O. Osenda, G. A. Raggio
We consider the two-spin subsystem entanglement for eigenstates of the Hamiltonian \[ H= \sum_{1\leq j< k \leq N} (\frac{1}{r_{j,k}})^α {\mathbf σ}_j\cdot {\mathbf σ}_k \] for a ri…