title: Topological entanglement in Abelian and non-Abelian excitation eigenstates.
abstract: Entanglement in topological phases of matter has so far been investigated through the perspective of their ground-state wave functions. In contrast, we demonstrate that the excitations of fractional quantum Hall (FQH) systems also contain information to identify the system's topological order. Entanglement spectrum of the FQH quasihole (QH) excitations is shown to differentiate between the conformal field theory (CFT) sectors, based on the relative position of the QH with respect to the entanglement cut. For Read-Rezayi model states, as well as Coulomb interaction eigenstates, the counting of the QH entanglement levels in the thermodynamic limit matches exactly the CFT counting, and sector changes occur as non-Abelian quasiholes successively cross the entanglement cut.
authors.affiliation: Institute of Physics, University of Belgrade, Pregrevica 118, 11 000 Belgrade, Serbia.
authors.forename: Z
authors.initials: Z
authors.lastname: Papić
authors.forename: B A
authors.initials: BA
authors.lastname: Bernevig
authors.forename: N
authors.initials: N
authors.lastname: Regnault