Hannover 2020 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 22: Posters: Quantum Optics and Photonics II

Q 22.42: Poster

Dienstag, 10. März 2020, 16:30–18:30, Empore Lichthof

Entanglement Generation Using Multiport Beam Splitters — •Shreya Kumar, Nico Sieber, Matthias Bayerbach, and Stefanie Barz — Universität Stuttgart, Stuttgart, Germany

Multiphoton entanglement is an integral part of optical quantum technologies. Entanglement between two photons can be either generated in sources directly or through interference of single photons at beam splitters and post-selection. We present a scheme to generate multiphoton entanglement through a balanced multiport fiber beam splitter (tritter). The balanced tritter erases the which-path information, resulting in interference, which leads to entanglement; tuning the input to the device lead to different entanglement classes. We demonstrate the scheme using three photons and generate cluster states and W-states.