Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 6: Quantum Effects (Disorder and Entanglement)
Q 6.6: Talk
Monday, March 9, 2020, 12:30–12:45, f342
Mode-independent quantum entanglement for light — •Jan Sperling1, Armando Perez-Leija2, Kurt Busch2, and Christine Silberhorn1 — 1University of Paderborn, Warburger Str. 100, 33098 Paderborn, Germany — 2Max-Born-Institut, Max-Born-Str. 2A, 12489 Berlin, Germany
Optical mode transformations, such as beam-splitter operations, can significantly alter the entanglement properties of quantum states of light. For example, such global unitary maps can generate entanglement from initially separable states, and vise versa. In this talk, we report on the construction of families of photonic states with the unique property that their entanglement is in fact preserved under arbitrary mode transformations. We develop tools to characterize the specific features of the resulting multi-photon and multi-mode states of quantum light. In contrast to most examples of optical implementations of entangled states, the type of entanglement we introduce offers a new resource of quantum correlations for quantum communications which is robust even under global mode transformations.