Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 46: Quantum Information (Concepts and Methods) IV

Q 46.1: Vortrag

Mittwoch, 7. März 2018, 14:00–14:15, K 1.019

Steering criteria from general entropic uncertainty relations — •Ana Cristina Sprotte Costa, Roope Uola, and Otfried Gühne — Universität Siegen, Siegen, Germany

Steering is a term coined by Schrödinger in 1935 in order to capture the essence of the Einstein-Podolsky-Rosen argument. It describes Alice's ability to affect Bob's quantum state through her choice of a measurement basis, without allowing for instantaneous signalling. We investigate a steering criteria from general entropic uncertainty relations and demonstrate that the resulting criteria outperform existing criteria in several scenarios. In this talk, we present the application of these criteria for different classes of bipartite systems, e.g. isotropic states, general two-qubit systems, bound entangled states. We also discuss the extension of these criteria for the multipartite case.