58 citations · 260 across the 12 of their papers we have counts for
11 papers · 1 filter
Bipartite entanglement in fermion systems
N. Gigena, R. Rossignoli
We discuss the relation between fermion entanglement and bipartite entanglement. We first show that an exact correspondence between them arises when the states are constrained to h…
Pair entanglement in dimerized spin-s chains
A. Boette, R. Rossignoli, N. Canosa +1
We examine the pair entanglement in the ground state of finite dimerized spin- chains interacting through anisotropic couplings immersed in a transverse magnetic field, by…
System-time entanglement in a discrete time model
A. Boette, R. Rossignoli, N. Gigena +1
We present a model of discrete quantum evolution based on quantum correlations between the evolving system and a reference quantum clock system. A quantum circuit for the model is…
Generalized conditional entropy optimization for qudit-qubit states
N. Gigena, R. Rossignoli
We derive a general approximate solution to the problem of minimizing the conditional entropy of a qudit-qubit system resulting from a local projective measurement on the qubit, wh…
Generalized mean field description of entanglement in dimerized spin systems
A. Boette, R. Rossignoli, N. Canosa +1
We discuss a generalized self-consistent mean field (MF) treatment, based on the selection of an arbitrary subset of operators for representing the system density matrix, and its a…
Dynamics of entanglement between two harmonic modes in stable and unstable regimes
L. Rebón, N. Canosa, R. Rossignoli
The exact dynamics of the entanglement between two harmonic modes generated by an angular momentum coupling is examined. Such system arises when considering a particle in a rotatin…