Distillability of entanglement in accelerated frames

Moradi, Shahpoor

doi:10.1103/physreva.79.064301

Cited by 51 publications

(55 citation statements)

References 9 publications

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“…This is exactly same as the density matrix obtained for the special case p = 1 [6,11]. Since the entanglement of ρ I,II has been studied elsewhere [6,11,53], it will not be presented here. The quantum discord, D(I : II), is evaluated and plotted in Fig.…”

Section: Bipartition Rob-antirobmentioning

confidence: 56%

Pseudo-entanglement evaluated in noninertial frames

et al. 2011

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We study quantum discord, in addition to entanglement, of bipartite pseudo-entanglement in noninertial frames. It is shown that the entanglement degrades from its maximum value in a stationary frame to a minimum value in an infinite accelerating frame. There is a critical region found in which, for particular cases, entanglement of states vanishes for certain accelerations. The quantum discord of pseudo-entanglement decreases by increasing the acceleration. Also, for a physically inaccessible region, entanglement and nonclassical correlation are evaluated and shown to match the corresponding values of the physically accessible region for an infinite acceleration.

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Section: Bipartition Rob-antirobmentioning

confidence: 56%

Pseudo-entanglement evaluated in noninertial frames

et al. 2011

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“…Approaches to density matrices of Dirac bi-spinors often focus on deriving information content of such states when transformations to inertial and non-inertial frames are performed [33][34][35]. In such applications, the dynamics is described by a free Dirac Hamiltonian and are not straightforwardly generalized to include external fields.…”

Section: Discussionmentioning

confidence: 99%

Entanglement of Dirac bi-spinor states driven by Poincaré classes of SU(2)⊗SU(2) coupling potentials

Bittencourt

Bernardini

2016

Annals of Physics

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A generalized description of entanglement and quantum correlation properties constraining internal degrees of freedom of Dirac(-like) structures driven by arbitrary Poincaré classes of external field potentials is proposed. The role of (pseudo)scalar, (pseudo)vector and tensor interactions in producing/destroying intrinsic quantum correlations for SU(2) ⊗ SU(2) bi-spinor structures is discussed in terms of generic coupling constants. By using a suitable ansatz to obtain the Dirac Hamiltonian eigenspinor structure of time-independent solutions of the associated Liouville equation, the quantum entanglement, via concurrence, and quantum correlations, via geometric discord, are computed for several combinations of well-defined Poincaré classes of Dirac potentials. Besides its inherent formal structure, our results set up a framework which can be enlarged as to include localization effects and to map quantum correlation effects into Dirac-like systems which describe low-energy excitations of graphene and trapped ions.

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“…It is believed that the investigation of the quantum correlation in a relativistic framework is not only helpful to understand some key questions in the quantum information theory, but also plays an important role in the study of the entropy and information paradox [4,5] of the black hole. Following the pioneering work presented by Peres et al [6], many authors [7][8][9][10][11][12][13][14][15][16][17][18][19] considered the quantum entanglement in a relativistic setting. Recently, Adesso et al [20] discussed the entanglement sharing of a scalar field in the noninertial frame and found that the classical correlation is independent of the acceleration of the observer if the other observer stays stationary.…”

Section: Introductionmentioning

confidence: 99%

Classical correlation and quantum discord sharing of Dirac fields in noninertial frames

2010

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The classical and quantum correlations sharing between modes of the Dirac fields in the noninertial frame are investigated. It is shown that: (i) The classical correlation for the Dirac fields decreases as the acceleration increases, which is different from the result of the scalar field that the classical correlation is independent of the acceleration; (ii) There is no simple dominating relation between the quantum correlation and entanglement for the Dirac fields, which is unlike the scalar case where the quantum correlation is always over and above the entanglement; (iii) As the acceleration increases, the correlations between modes I and II and between modes A and II increase, but the correlations between modes A and I decrease.

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Distillability of entanglement in accelerated frames

Cited by 51 publications

References 9 publications

Pseudo-entanglement evaluated in noninertial frames

Pseudo-entanglement evaluated in noninertial frames

Entanglement of Dirac bi-spinor states driven by Poincaré classes of SU(2)⊗SU(2) coupling potentials

Classical correlation and quantum discord sharing of Dirac fields in noninertial frames

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