Multipartite nonlocality in a thermalized Ising spin chain

  title={Multipartite nonlocality in a thermalized Ising spin chain},
  author={Steve Campbell and Mauro Paternostro},
  journal={Physical Review A},
We study multipartite correlations and nonlocality in an isotropic Ising ring under transverse magnetic field at both zero and finite temperature. We highlight parity-induced differences between the multipartite Bell-like functions used in order to quantify the degree of nonlocality within a ring state and reveal a mechanism for the passive protection of multipartite quantum correlations against thermal spoiling effects that is clearly related to the macroscopic properties of the ring model. 

Figures from this paper

General spin systems without genuinely multipartite nonlocality

There are multipartite entangled states in many-body systems which may be potential resources in various quantum applications. In this paper, based on clustering theorems, we show that both the

Multipartite non-locality and entanglement signatures of a field-induced quantum phase transition

Abstract Quantum correlation measures are limited in practice to a few number of parties, since no general theory is still capable of reaching the thermodynamic limit. In the present work we study

Experimental linear-optics simulation of multipartite non-locality in the ground state of a quantum Ising ring

This work engineering the ground state of a three-spin Ising ring by using a pair of entangled photons and connects the violation of a multipartite Bell inequality with the amount of tripartite entanglement in the ring.

Global Quantum Correlation in the Ising model

We study quantum correlations in an isotropic Ising ring under the effects of a transverse magnetic field. After characterizing the behavior of two-spin quantum correlations, we extend our analysis

Multipartite quantum and classical correlations in symmetric n-qubit mixed states

It is shown that the existence of symmetries greatly reduces the amount of free parameters to be optimized in order to find the optimal measurement that minimizes the conditional entropy in the discord calculation.

Global quantum correlations in finite-size spin chains

We perform an extensive study of the properties of global quantum correlations in finite-size one-dimensional quantum spin models at finite temperature. By adopting a recently proposed measure for

Factorization and Criticality in the Anisotropic XY Chain via Correlations

In this review, we discuss the zero and finite temperature behavior of various bipartite quantum and total correlation measures, the skew information-based quantum coherence and the local quantum

Long-range multipartite quantum correlations and factorization in a one-dimensional spin-1/2 XY chain

We study the properties of multipartite quantum correlation (MQC) in a one-dimensional spin-1/2 XY chain, where the three-spin reduced states are focused on and the four introduced MQC measures are

Robust multipartite entanglement generation via a collision model

We examine a simple scheme to generate genuine multipartite entangled states across disjoint qubit registers. We employ a shuttle qubit that is sequentially coupled, in an energy preserving manner,

Heat capacity and entanglement measure in a simple two-qubit model

A simple two-qubit model showing quantum phase transitions as a consequence of ground-state-level crossings is studied in detail. Using the system’s concurrence as an entanglement measure and heat



Quantum Correlations in (1+1)-dimensional Systems

i Tesis presentada para optar al grado de doctor, Mayo 2005. v vi influyentes e importantes, mi hermana 1 y mi madre, a quienes les agradezco toda su confianza y les dedico este trabajo.

Analogous spectra hold for larger rings, although the quickly growing number of energy levels make their visualization difficult

    Physics (Long Island City

    • NY) 1, 195 (1964); J. F. Clauser, M. A. Horne, A. Shimony, and R. A. Holt, Phys. Rev. Lett. 23, 880
    • 1969

    Nature Phys

    • 6, 151 - 153
    • 2010


    • Phys. 48, 13
    • 2007