330 citations · 2.1k across the 52 of their papers we have counts for
4 papers · 2 filters
Maximally entangled fermions
Dirk-M. Schlingemann, Marco Cozzini, Michael Keyl +1
Fermions play an essential role in many areas of quantum physics and it is desirable to understand the nature of entanglement within systems that consists of fermions. Whereas the…
Long-distance entanglement and quantum teleportation in XX spin chains
L. Campos Venuti, S. M. Giampaolo, F. Illuminati +1
Isotropic XX models of one-dimensional spin-1/2 chains are investigated with the aim to elucidate the formal structure and the physical properties that allow these systems to act a…
Quantum criticality as a resource for quantum estimation
Paolo Zanardi, Matteo G A Paris, Lorenzo Campos Venuti
We address quantum critical systems as a resource in quantum estimation and derive the ultimate quantum limits to the precision of any estimator of the coupling parameters. In part…
Bures metric over thermal state manifolds and quantum criticality
Paolo Zanardi, Lorenzo Campos Venuti, Paolo Giorda
We analyze the Bures metric over the manifold of thermal density matrices for systems featuring a zero temperature quantum phase transition. We show that the quantum critical regio…