7 citations · 16 across the 4 of their papers we have counts for
4 papers · 1 filter
Momentum-space analysis of multipartite entanglement at quantum phase transitions
Alberto Anfossi, Paolo Giorda, Arianna Montorsi
We investigate entanglement properties at quantum phase transitions of an integrable extended Hubbard model in the momentum space representation. Two elementary subsystems are reco…
Structure of quantum correlations in momentum space and off diagonal long range order in eta pairing and BCS states
Paolo Giorda, Alberto Anfossi
The quantum states built with the eta paring mechanism i.e., eta pairing states, were first introduced in the context of high temperature superconductivity where they were recogniz…
The differential information-geometry of quantum phase transitions
P. Zanardi, P. Giorda, M. Cozzini
The manifold of coupling constants parametrizing a quantum Hamiltonian is equipped with a natural Riemannian metric with an operational distinguishability content. We argue that th…
Universal quantum control in irreducible state sectors: application to bosonic and spin-boson systems
Paolo Giorda, Paolo Zanardi, Seth Lloyd
This paper has been withdrawn by the authors because it was just an early submission of quant-ph/0308133 with the wrong title. Sorry.