Bonn 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

QI: Fachverband Quanteninformation

QI 19: Mechanical, Macroscopic, and Continuous-variable Quantum Systems (joint session QI/Q)

QI 19.6: Vortrag

Mittwoch, 12. März 2025, 16:00–16:15, HS IX

Detecting genuine non-Gaussian entanglement — •Serge Deside, Tobi Haas, and Nicolas Cerf — ULB, Brussels, Belgium

Efficiently certifying non-Gaussian entanglement in continuous-variable quantum systems is a central challenge for advancing quantum information processing, photonic quantum computing, and metrology. Here, we put forward continuous-variable extensions of the recently introduced entanglement criteria based on moments of the partially transposed state, together with simple readout schemes that require only passive linear optics and local particle number measurements over a handful of state replicas. Our method enables the detection of genuine non-Gaussian entanglement for relevant state families overlooked by all standard approaches, which includes the entire class of NOON states. Further, it is robust against realistic experimental constraints (losses, imperfect copies, and finite statistics), which we demonstrate by an in-depth simulation.

Keywords: Non-Gaussian entanglement; Entanglement witnessing; Linear optics; Photon counting