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Topologically protected localised states in spin chains.

Marta P Estarellas1, Irene D'Amico1, Timothy P Spiller1

  • 1Department of Physics, University of York, York YO10 5DD, United Kingdom.

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|February 23, 2017
PubMed
Summary
This summary is machine-generated.

We studied spin chains inspired by the Su, Schrieffer, and Hegger (SSH) model. Topologically protected quantum states in these chains show robustness against noise, indicating potential for quantum information tasks.

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Area of Science:

  • Condensed Matter Physics
  • Quantum Information Science

Background:

  • The Su, Schrieffer, and Hegger (SSH) model is a foundational concept in condensed matter physics, describing topological properties in one-dimensional systems.
  • Understanding topological protection is crucial for developing robust quantum technologies.

Purpose of the Study:

  • To investigate spin chain families inspired by the SSH model.
  • To demonstrate the topological induction of spatial localization of quantum states.
  • To explore the robustness of these states against random noise for potential quantum applications.

Main Methods:

  • Theoretical modeling of spin chain families.
  • Explicit demonstration of topologically induced spatial localization.
  • Detailed investigation of the effects of random noise on quantum states.

Main Results:

  • Topologically induced spatial localization of quantum states was explicitly demonstrated.
  • The topologically protected states exhibited significant robustness against random noise perturbations.
  • Spin chain models with topological robustness were identified.

Conclusions:

  • The studied spin chain models possess topologically protected states that are robust against noise.
  • These robust states are promising candidates for quantum information processing tasks.
  • Potential applications in quantum devices were discussed.