156 citations · 411 across the 15 of their papers we have counts for
15 papers
Time-ordering Dependence of Measurements in Teleportation
Reinhold A. Bertlmann, Heide Narnhofer, Walter Thirring
We trace back the phenomenon of "delayed-choice entanglement swapping" as it was realized in a recent experiment to the commutativity of the projection operators that are involved…
Entanglement or separability: The choice of how to factorize the algebra of a density matrix
Walter Thirring, Reinhold A. Bertlmann, Philipp Köhler +1
We discuss the concept of how entanglement changes with respect to different factorizations of the total algebra which describes the quantum states. Depending on the considered fac…
Analysis of quantum semigroups with GKS-Lindblad generators I. Simple generators
Bernhard Baumgartner, Heide Narnhofer, Walter Thirring
Semigroups describing the time evolution of open quantum systems in finite dimensional spaces have generators of a special form, known as Lindblad generators. The simple generators…
Emergence of order in selection-mutation dynamics
Christoph Marx, Harald A. Posch, Walter Thirring
We characterize the time evolution of a d-dimensional probability distribution by the value of its final entropy. If it is near the maximally-possible value we call the evolution m…
High- superconductivity by phase cloning
Nevena Ilieva, Walter Thirring
We consider a BCS-type model in the spin formalism and argue that the structure of the interaction provides a mechanism for control over directions of the spin $\vect S$ other than…
Entanglement of mesoscopic systems
Heide Narnhofer, Walter Thirring
The entanglement of clouds of atoms recently experimentally verified is expressed in terms of the fluctuation algebra introduced by Goderis, Verbeure and Vets. A mean field Hamilto…