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Increasing entanglement through engineered disorder in the random Ising chain (Articolo in rivista)

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Increasing entanglement through engineered disorder in the random Ising chain (Articolo in rivista) (literal)

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Binosi D.; De Chiara G.; Montangero S.; Recati A. (2007)
Increasing entanglement through engineered disorder in the random Ising chain
in Physical review. B, Condensed matter and materials physics
(literal)

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European Ctr Theoret Studies Nucl Phys & Related, I-38050 Villazzano, TN, Italy; Univ Trent, BEC CNR INFM, Dept Phys, I-38050 Povo, TN, Italy; NEST CNR INFM, I-56126 Pisa, Italy; Scuola Normale Super Pisa, I-56126 Pisa, Italy (literal)

Titolo

Increasing entanglement through engineered disorder in the random Ising chain (literal)

Abstract

The ground-state entanglement entropy between block of sites in the random Ising chain is studied by means of the Von Neumann entropy. We show that in presence of strong correlations between the disordered couplings and local magnetic fields the entanglement increases and becomes larger than in the ordered case. The different behavior with respect to the uncorrelated disordered model is due to the drastic change of the ground state properties. The same result holds also for the random three-state quantum Potts model. (literal)

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