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Q: Fachverband Quantenoptik und Photonik

Q 49: Quantum gases (Miscellaneous)

Q 49.2: Vortrag

Donnerstag, 12. März 2020, 14:30–14:45, e214

Measurement of identical particle entanglement and the influence of antisymmetrisation — •Jan Hendrik Becher¹, Enrico Sindici², Ralf Klemt¹, Philipp M. Preiss¹, Andrew J. Daley², and Selim Jochim¹ — ¹Physics Institute, Heidelberg University, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany — ²Department of Physics and SUPA, University of Strathclyde, Glasgow G4 0NG, UK

We explore the relationship between symmetrisation and entanglement through measurements on few particle systems in a multi-well potential. In particular, considering two or three trapped atoms, we measure and distinguish entanglement characterised in terms of spatial modes from genuine multipartite entanglement arising from two different physical origins: antisymmetrisation of the fermionic wavefunction and interaction between particles. We quantify this through the entanglement negativity of states, and the introduction of an antisymmetric negativity, which allows us to understand the role that symmetrisation plays in the measured entanglement properties.