Mainz 2017 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 8: Quantum Information: Concepts and Methods II

Q 8.4: Vortrag

Montag, 6. März 2017, 17:45–18:00, P 2

Steering Criteria Based on Tsallis Entropies — •Ana Cristina Sprotte Costa, Roope Uola, Costantino Budroni, and Otfried Gühne — Universität Siegen, Siegen, Germany

Steering is a term coined by Schrödinger in 1935, within the context of the Einstein-Podolsky-Rosen argument to name Alice's ability in affecting Bob's state through her choice of a measurement basis. Steering has been formalized in terms of a quantum information task involving bipartite states and measurement settings, in which case the existence of entanglement is necessary but not sufficient. Steering inequalities based on entropic uncertainty relations have also been proposed and experimentally tested in the last years. Based on Tsallis entropies, we present a generalization for the entropic steering and its connection with known results from the literature. Special attention will be given for certain families of Tsallis entropies, in order to show that the violation of these generalized steering entropic criteria characterize also the presence of entanglement for bipartite quantum states.