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Azimi, M. [Author]; Chotorlishvili, L. [Author]; Mishra, S.K. [Author]; Greschner, Sebastian [Author]; Vekua, T. [Author]; Berakdar, J. [Author]

Helical multiferroics for electric field controlled quantum information processing - [published Version]

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  • Media type: Text; E-Article
  • Title: Helical multiferroics for electric field controlled quantum information processing
  • Contributor: Azimi, M. [Author]; Chotorlishvili, L. [Author]; Mishra, S.K. [Author]; Greschner, Sebastian [Author]; Vekua, T. [Author]; Berakdar, J. [Author]
  • imprint: College Park, MD : American Physical Society, 2014
  • Published in: Physical Review B 89 (2014), Nr. 2
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.15488/2059; https://doi.org/10.1103/PhysRevB.89.024424
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: Magnetoelectric coupling in helical multiferroics allows us to steer spin order with electric fields. Here we show theoretically that in a helical multiferroic chain quantum information processing as well as quantum phases are highly sensitive to electric (E) field. Applying E field, the quantum state transfer fidelity can be increased and made directionally dependent. We also show that E field transforms the spin-density-wave/nematic or multipolar phases of a frustrated ferromagnetic spin-12 chain in chiral phase with a strong magnetoelectric coupling. We find sharp reorganization of the entanglement spectrum as well as a large enhancement of fidelity susceptibility at Ising quantum phase transition from nematic to chiral states driven by electric field. These findings point to a tool for quantum information with low power consumption. © 2014 American Physical Society.
  • Access State: Open Access