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arXiv · 1711.08948

Certification of high-dimensional entanglement and Einstein-Podolsky-Rosen steering with cold atomic quantum memory

Michał Dąbrowski·Mateusz Mazelanik·Michał Parniak·Adam Leszczyński·Michał Lipka·Wojciech Wasilewski
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Abstract

The advent of structured, high-dimensional entangled states brings new possibilities for quantum imaging, information processing and quantum key distribution. We experimentally generate and characterize a spatially entangled state stored in a quantum memory system, using entropic EPR-steering inequality, yielding genuine violation of $1.06\pm0.15$ bits and certifying entanglement of formation of at least $0.70\pm0.15$ ebits. The supremacy of the entropic witness is demonstrated for a wide class of experimentally available states, giving prospects for EPR-steering applications in noisy systems or with lossy quantum channels.

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Michał Dąbrowski, Mateusz Mazelanik, Michał Parniak, Adam Leszczyński, Michał Lipka, Wojciech Wasilewski. 2017-11-24. Certification of high-dimensional entanglement and Einstein-Podolsky-Rosen steering with cold atomic quantum memory. https://doi.org/10.1103/physreva.98.042126

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