Experimental Demonstration of Four-Dimensional Photonic Spatial Entanglement between Multi-core Optical Fibres

Fibre transport of multi-dimensional photonic quantum states promises high information capacity per photon without space restriction. This work experimentally demonstrates transmission of spatial ququarts through multi-core optical fibres and measurement of the entanglement between two fibres with q...

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Veröffentlicht in:Scientific reports 2017-06, Vol.7 (1), p.4302-8, Article 4302
Hauptverfasser: Lee, Hee Jung, Choi, Sang-Kyung, Park, Hee Su
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Sprache:eng
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Zusammenfassung:Fibre transport of multi-dimensional photonic quantum states promises high information capacity per photon without space restriction. This work experimentally demonstrates transmission of spatial ququarts through multi-core optical fibres and measurement of the entanglement between two fibres with quantum state analyzers, each composed of a spatial light modulator and a single-mode fibre. Quantum state tomography reconstructs the four-dimension entangled state that verifies the nonlocality through concurrences in two-dimensional subspaces, a lower bound of four-dimensional concurrence and a Bell-type CGLMP inequality.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-04444-8