509 citations · 3.2k across the 26 of their papers we have counts for
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Quantum Chernoff Bound metric for the XY model at finite temperature
Damian F. Abasto, N. Tobias Jacobson, Paolo Zanardi
We explore the finite temperature phase diagram of the anisotropic XY spin chain using the Quantum Chernoff Bound metric on thermal states. The analysis of the metric elements allo…
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…
Quantum critical scaling of the geometric tensors
Lorenzo Campos Venuti, Paolo Zanardi
Berry phases and the quantum-information theoretic notion of fidelity have been recently used to analyze quantum phase transitions from a geometrical perspective. In this paper we…
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…