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arxiv: 1307.1419 · v2 · pith:52LHIP5Xnew · submitted 2013-07-04 · 🪐 quant-ph · cond-mat.str-el

Cumulative quantum work-deficit versus entanglement in the dynamics of an infinite spin chain

classification 🪐 quant-ph cond-mat.str-el
keywords quantumentanglementbipartitechaincorrelationcumulativedynamicsfield
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We find that the dynamical phase transition (DPT) in nearest-neighbor bipartite entanglement of time-evolved states of the anisotropic infinite quantum XY spin chain, in a transverse time-dependent magnetic field, can be quantitatively characterized by the dynamics of an information-theoretic quantum correlation measure, namely, quantum work-deficit (QWD). We show that only those nonequilibrium states exhibit entanglement resurrection after death, on changing the field parameter during the DPT, for which the cumulative bipartite QWD is above a threshold. The results point to an interesting inter-relation between two quantum correlation measures that are conceptualized from different perspectives.

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