37 citations · 46 across the 4 of their papers we have counts for
4 papers
Entanglement, Haag-duality and type properties of infinite quantum spin chains
M. Keyl, T. Matsui, D. Schlingemann +1
We consider an infinite spin chain as a bipartite system consisting of the left and right half-chain and analyze entanglement properties of pure states with respect to this splitti…
Infinitely entangled states
M. Keyl, D. Schlingemann, R. F. Werner
For states in infinite dimensional Hilbert spaces entanglement quantities like the entanglement of distillation can become infinite. This leads naturally to the question, whether o…
How to correct small quantum errors
M. Keyl, R. F. Werner
The theory of quantum error correction is a cornerstone of quantum information processing. It shows that quantum data can be protected against decoherence effects, which otherwise…
The Rate of Optimal Purification procedures
M. Keyl, R. F. Werner
Purification is a process in which decoherence is partially reversed by using several input systems which have been subject to the same noise. The purity of the outputs generally i…