4.9k citations · 14.4k across the 107 of their papers we have counts for
7 papers · 2 filters
Quantum error-correcting codes associated with graphs
D. Schlingemann, R. F. Werner
We present a construction scheme for quantum error correcting codes. The basic ingredients are a graph and a finite abelian group, from which the code can explicitly be obtained. W…
Separability properties of tripartite states with UxUxU-symmetry
T. Eggeling, R. F. Werner
We study separability properties in a 5-dimensional set of states of quantum systems composed of three subsystems of equal but arbitrary finite Hilbert space dimension d. These are…
Entanglement Measures under Symmetry
K. G. H. Vollbrecht, R. F. Werner
We show how to simplify the computation of the entanglement of formation and the relative entropy of entanglement for states, which are invariant under a group of local symmetries.…
Bound entangled Gaussian states
R. F. Werner, M. M. Wolf
We discuss the entanglement properties of bipartite states with Gaussian Wigner functions. Separability and the positivity of the partial transpose are characterized in terms of th…
A counterexample to a conjectured entanglement inequality
R. F. Werner, K. G. H. Vollbrecht
We give an explicit counterexample to an entanglement inequality suggested in a recent paper [quant-ph/0005126] by Benatti and Narnhofer. The inequality would have had far-reaching…
All Teleportation and Dense Coding Schemes
R. F. Werner
We establish a one-to-one correspondence between (1) quantum teleportation schemes, (2) dense coding schemes, (3) orthonormal bases of maximally entangled vectors, (4) orthonormal…