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QI: Fachverband Quanteninformation

QI 3: Quantum Information and Foundations I

QI 3.6: Vortrag

Montag, 20. September 2021, 15:45–16:00, H4

Bound entanglement from randomized measurementsSatoya Imai1, •Nikolai Wyderka2, Andreas Ketterer3,4, and Otfried Gühne11Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Str. 3, D-57068 Siegen, Germany — 2Institut für Theoretische Physik III, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany — 3Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg, Germany — 4EUCOR Centre for Quantum Science and Quantum Computing, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg, Germany

In scenarios with limited control over multipartite quantum states, randomized measurements provide a powerful tool to characterize quantum correlations. To that end, we analyze the moments of the resulting probability distribution in a systematic way and show (near-)optimal criteria to detect entanglement in different scenarios of bipartite and tripartite systems. In particular, we analyze the geometry of the space of higher-dimensional bipartite quantum systems in order to derive explicit criteria that are able to detect bound entanglement, a very weak form of entanglement, in this setting.

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DPG-Physik > DPG-Verhandlungen > 2021 > SAMOP