Laser Physics

, Volume 17, Issue 6, pp 889–892

Effect of static disorder in an electron Fabry-Perot interferometer with two quantum scattering centers

  • F. Ciccarello
  • G. M. Palma
  • M. Zarcone
  • Y. Omar
  • V. R. Vieira
Quantum Information and Quantum Computation

Abstract

In a recent paper—F. Ciccarello et al., New J. Phys. 8, 214 (2006)—we have demonstrated that the electron transmission properties of a one-dimensional (1D) wire with two identical embedded spin-1/2 impurities can be significantly affected by entanglement between the spins of the scattering centers. Such an effect is of particular interest in the control of the transmission of quantum information in nanostructures and can be used as a detection scheme of maximally entangled states of two localized spins. In this letter, we relax the constraint that the two magnetic impurities are equal and investigate how the main results presented in the above paper are affected by a static disorder in the exchange coupling constants of the impurities. Good robustness against deviation from impurity symmetry is found for both the entanglement dependent transmission and the maximally entangled states generation scheme.

PACS numbers

03.67.Mn 72.10.-d 73.23.-b 85.35.Ds 

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Copyright information

© MAIK “Nauka/Interperiodica” 2007

Authors and Affiliations

  • F. Ciccarello
    • 1
    • 2
  • G. M. Palma
    • 2
  • M. Zarcone
    • 1
  • Y. Omar
    • 3
  • V. R. Vieira
    • 4
  1. 1.CNISM and Dipartimento di Fisica e Tecnologie Relative dell’Università degli Studi di PalermoPalermoItaly
  2. 2.NEST-INFM (CNR) and Dipartimento di Scienze Fisiche ed Astronomiche dell’Università degli Studi di PalermoPalermoItaly
  3. 3.SQIG, Instituto de Telecomunicações, P-1049-001 Lisbon and CEMAPRE, ISEGTechnical University of LisbonLisbonPortugal
  4. 4.CFIF and Department of PhysicsInstituto Superior TécnicoLisbonPortugal

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