Multi-Photon Entanglement and Quantum Non-Locality

Thomas P. Pearsall

Thomas P. Pearsall

Sooryansh Asthana, Soumik Adhikary, V. Ravishankar

Yuki Kodama, Holger F. Hofmann

Entanglement between two local multi-photon multi-mode systems can be generated by swapping a pair of modes between the two local multi-mode systems. In this presentation, we consider possible strategies for the efficient generation of entanglement between systems with three or more modes. It is shown that the choice of photon number inputs in the local systems adds a new degree of freedom to the non-local interference effects observed in the output photon number statistics.

Ralph Wiegner, Joachim von Zanthier, G. S. Agarwal

Hee Jung Lee, Sang-Kyung Choi, Hee Su Park

Fiber transport of multi-dimensional photonic qudits promises high information capacity per photon without space restriction. This work experimentally demonstrates transmission of spatial qudits through multi-core optical fibers and measurement of the entanglement between two fibers with quantum state analyzers, each composed of a spatial light modulator and a single-mode fiber. Quantum state tomography reconstructs the four-dimension entangled state that verifies the non-locality through concurrences in two-dimensional subspaces and a high-dimensional Bell-type CGLMP inequality.