Topologically protected localised states in spin chains

Abstract

We consider spin chain families inspired by the Su, Schrieffer and Hegger (SSH) model. We demonstrate explicitly the topologically induced spatial localisation of quantum states in our systems. We present detailed investigations of the effects of random noise, showing that these topologically protected states are very robust against this type of perturbation. Systems with such topological robustness are clearly good candidates for quantum information tasks and we discuss some potential applications. Thus, we present interesting spin chain models which show promising applications for quantum devices.

11 pages, 8 figures

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Cited by in corpus (5)

• Fast and robust quantum state transfer in a topological Su-Schrieffer-Heeger chain with Next-to-Nearest-Neighbour interactions
• Disorder-assisted distribution of entanglement in $XY$ spin chains
• Almost perfect transmission of multipartite entanglement through disordered and noisy spin chains
• Robust and efficient transport of two-qubit entanglement via disordered spin chains
• Topological phase and lattice structures in spin chain models