Certification of Entanglement Using Quantum Steering in Networks

We have the pleasure of inviting you to the seminar of the‍

Quantum Information and Quantum Computing Working Group
(online only)
‍

Speaker: Sophie Egelhaaf (Université de Genève)

Title:  Certification of Entanglement Using Quantum Steering in NetworksTime: Wednesday, 20.09.2023 at 14:30 CEST‍

Zoom link: https://us06web.zoom.us/j/84427806931‍

Meeting ID: 844 2780 6931

Access code: nisq

Abstract

Bipartite low dimensional entanglement has been studied extensively. However, many findings cannot be extrapolated to multiple parties and moreover, increasing the dimensions of the systems adds complexity to the entanglement structure. We are interested in characterising the degree of high-dimensional entanglement, specifically focusing on various multipartite quantum steering scenarios. One such example is a triangle network with only one trusted party, or more generally a line network with some trusted parties. We investigate what can be deduced about the strength of entanglement between the different nodes of the network in such scenarios. We are especially interested in entanglement dimensionality, i.e. the question of how many degrees of freedom can be certified to be entangled, for which we provide analytical bounds.

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Kind regards,Alexandre Orthey,Remigiusz Augusiak.