Entanglement between Distant Regions in Disordered Quantum Wires

Yishai Schreiber, Richard Berkovits

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4 Scopus citations


The entanglement negativity for spinless fermions in a strongly disordered 1D Anderson model is studied. For two close regions, the negativity is log-normally distributed, and is suppressed by repulsive interactions. With increasing distance between the regions, the typical negativity decays, but there remains a peak in the distribution, also at high values, representing highly entangled distant regions. For intermediate distances, in the noninteracting case, two distinct peaks are observed. As a function of interaction strength, the two peaks merge into each other. The abundance and nature of these entangled regions is studied. The relation to resonances between single-particle eigenstates is demonstrated. Thus, although the system is strongly disordered, it is nevertheless possible to encounter two far-away regions which are entangled.

Original languageEnglish
Article number1900113
JournalAdvanced Quantum Technologies
Issue number4
StatePublished - 1 Apr 2020

Bibliographical note

Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim


  • Anderson model
  • entanglement negativity
  • many-body phenomena
  • necklace states


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