Discriminating multi-partite entangled states
Christian Schmid, Nikolai Kiesel, Wies{\l}aw Laskowski, Witlef, Wieczorek, Marek \.Zukowski, Harald Weinfurter
TL;DR
This paper develops criteria based on Bell inequalities to experimentally distinguish between different classes of multi-partite entangled states, enhancing tools for quantum state characterization.
Contribution
It introduces a new method derived from Bell inequalities for discriminating multi-partite entangled states experimentally.
Findings
Criteria for classifying multi-partite entangled states
Experimental discrimination method demonstrated
Enhancement of quantum state characterization tools
Abstract
The variety of multi-partite entangled states enables numerous applications in novel quantum information tasks. In order to compare the suitability of different states from a theoretical point of view classifications have been introduced. Accordingly, here we derive criteria and demonstrate how to experimentally discriminate an observed state against the ones of certain other classes of multi-partite entangled states. Our method, originating in Bell inequalities, adds an important tool for the characterization of multi-party entanglement.
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