93 citations · 101 across the 3 of their papers we have counts for
4 papers
Exact entanglement renormalization for string-net models
Robert Koenig, Ben W. Reichardt, Guifre Vidal
We construct an explicit renormalization group (RG) transformation for Levin and Wen's string-net models on a hexagonal lattice. The transformation leaves invariant the ground-stat…
On Exchangeable Continuous Variable Systems
Robert Koenig, Michael M. Wolf
We investigate permutation-invariant continuous variable quantum states and their covariance matrices. We provide a complete characterization of the latter with respect to permutat…
A most compendious and facile quantum de Finetti theorem
Robert Koenig, Graeme Mitchison
In its most basic form, the finite quantum de Finetti theorem states that the reduced k-partite density operator of an n-partite symmetric state can be approximated by a convex com…
A de Finetti representation for finite symmetric quantum states
Robert Koenig, Renato Renner
Consider a symmetric quantum state on an n-fold product space, that is, the state is invariant under permutations of the n subsystems. We show that, conditioned on the outcomes of…