Entanglement evolution of three-qubit states in a quantum-critical environment
XS Ma, AM Wang, Y Cao - Physical Review B—Condensed Matter and …, 2007 - APS
We investigate the entanglement dynamics of three-qubit states in a quantum-critical
environment, which is an Ising model in a transverse field. By using negativity as …
environment, which is an Ising model in a transverse field. By using negativity as …
Divergence of the entanglement range in low-dimensional quantum systems
We study the pairwise entanglement close to separable ground states of a class of one-
dimensional quantum spin models. At T= 0 we find that such ground states separate regions …
dimensional quantum spin models. At T= 0 we find that such ground states separate regions …
Measuring entanglement entropy of a generic many-body system with a quantum switch
Entanglement entropy has become an important theoretical concept in condensed matter
physics because it provides a unique tool for characterizing quantum mechanical many …
physics because it provides a unique tool for characterizing quantum mechanical many …
Single-copy entanglement in critical quantum spin chains
We consider the single-copy entanglement as a quantity to assess quantum correlations in
the ground state in quantum many-body systems. We show for a large class of models that …
the ground state in quantum many-body systems. We show for a large class of models that …
Measuring entanglement using quantum quenches
J Cardy - Physical review letters, 2011 - APS
Measuring Entanglement Using Quantum Quenches Page 1 Measuring Entanglement Using
Quantum Quenches John Cardy Rudolf Peierls Centre for Theoretical Physics, Oxford …
Quantum Quenches John Cardy Rudolf Peierls Centre for Theoretical Physics, Oxford …
Geometric mean of bipartite concurrences as a genuine multipartite entanglement measure
In this paper, we propose the geometric mean of bipartite concurrences as a genuine
multipartite entanglement measure. This measure achieves the maximum value for …
multipartite entanglement measure. This measure achieves the maximum value for …
Characterizing entanglement by momentum jump in the frustrated Heisenberg ring at a quantum phase transition
We study the pairwise concurrences, a measure of entanglement, of the ground states for
the frustrated Heisenberg ring to explore the relation between entanglement and quantum …
the frustrated Heisenberg ring to explore the relation between entanglement and quantum …
Exact and asymptotic measures of multipartite pure-state entanglement
Hoping to simplify the classification of pure entangled states of multi (m)− partite quantum
systems, we study exactly and asymptotically (in n) reversible transformations among n th …
systems, we study exactly and asymptotically (in n) reversible transformations among n th …
Induced entanglement enhanced by quantum criticality
Two-qubit entanglement can be induced by a quantum data bus interacting with them. In this
paper, with the quantum spin chain in the transverse field as an illustration of the quantum …
paper, with the quantum spin chain in the transverse field as an illustration of the quantum …
Scaling of genuine multiparticle entanglement close to a quantum phase transition
M Hofmann, A Osterloh, O Gühne - Physical Review B, 2014 - APS
We investigate the scaling and spatial distribution of genuine multiparticle entanglement in
three-and four-spin reduced states of the one-dimensional XY model at the quantum phase …
three-and four-spin reduced states of the one-dimensional XY model at the quantum phase …