73 citations · 161 across the 4 of their papers we have counts for
4 papers
Quantum-Classical Hybrid Systems and their Quasifree Transformations
Lars Dammeier, Reinhard F. Werner
We study continuous variable systems, in which quantum and classical degrees of freedom are combined and treated on the same footing. Thus all systems, including the inputs or outp…
State-independent Uncertainty Relations and Entanglement Detection in Noisy Systems
René Schwonnek, Lars Dammeier, Reinhard F. Werner
Quantifying quantum mechanical uncertainty is vital for the increasing number of experiments that reach the uncertainty limited regime. We present a method for computing tight vari…
Entanglement Distillation using the Exchange Interaction
Adrian Auer, René Schwonnek, Christian Schoder +3
A key ingredient of quantum repeaters is entanglement distillation, i.e., the generation of high-fidelity entangled qubits from a larger set of pairs with lower fidelity. Here, we…
Uncertainty Relations for Angular Momentum
Lars Dammeier, René Schwonnek, Reinhard F. Werner
In this work we study various notions of uncertainty for angular momentum in the spin-s representation of SU(2). We characterize the "uncertainty regions'' given by all vectors, wh…