Finding purifications with minimal entanglement

  title={Finding purifications with minimal entanglement},
  author={Johannes Hauschild and Eyal Leviatan and Jens H. Bardarson and Ehud Altman and Michael P. Zaletel and F. Pollmann},
  journal={Physical Review B},
Author(s): Hauschild, J; Leviatan, E; Bardarson, JH; Altman, E; Zaletel, MP; Pollmann, F | Abstract: © 2018 American Physical Society. Purification is a tool that allows to represent mixed quantum states as pure states on enlarged Hilbert spaces. A purification of a given state is not unique and its entanglement strongly depends on the particular choice made. Moreover, in one-dimensional systems, the amount of entanglement is linked to how efficiently the purified state can be represented using… 

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