Entanglement and quantum phase transition in a one-dimensional system of quantum dots with disorder

Hefeng Wang, Sabre Kais

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We study the entanglement of formation and quantum phase transition in a one-dimensional quantum dot system with disorder modeled by the Hubbard Hamiltonian. The entanglement for three different cases is studied: the homogeneous case, the impurity case of symmetric electron hopping, and asymmetric electron hopping. We find that the local entanglement of the system can be tuned by introducing different impurities characterized by the physical parameters of the system. In particular, for certain parameters, the entanglement is negligible up to a critical point Uc, where a quantum phase transition occurs, and is different from zero above Uc.

Original languageEnglish
Pages (from-to)827-835
Number of pages9
JournalInternational Journal of Quantum Information
Volume4
Issue number5
DOIs
Publication statusPublished - 1 Oct 2006
Externally publishedYes

Fingerprint

quantum dots
disorders
impurities
critical point
electrons

Keywords

  • Entanglement
  • Metallic insulator transition
  • Quantum phase transition

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Entanglement and quantum phase transition in a one-dimensional system of quantum dots with disorder. / Wang, Hefeng; Kais, Sabre.

In: International Journal of Quantum Information, Vol. 4, No. 5, 01.10.2006, p. 827-835.

Research output: Contribution to journalArticle

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