Regensburg 2022 – scientific programme

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QI: Fachverband Quanteninformation

QI 9: Quantum Correlations

QI 9.3: Talk

Thursday, September 8, 2022, 10:00–10:15, H8

Nonlinear Entanglement Detection from Immanant Inequalities — •Albert Rico and Felix Huber — Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 30-348 Kraków, Poland

We develop a method for nonlinear entanglement detection which is based on inequalities for immanants. This allows to use multipartite witnesses to detect bipartite states in a non-conventional way. We give examples and compare their effectiveness to the standard usage of witnesses. We show that this type of nonlinear entanglement detection can outperform its linear version, and how the detection can be performed in the laboratory through randomized measurements.