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arXiv · 1701.03269

Quantifying photonic high-dimensional entanglement

Anthony Martin·Thiago Guerreiro·Alexey Tiranov·Sébastien Designolle·Florian Fröwis·Nicolas Brunner·Marcus Huber·Nicolas Gisin
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Abstract

High-dimensional entanglement offers promising perspectives in quantum information science. In practice, however, the main challenge is to devise efficient methods to characterize high-dimensional entanglement, based on the available experimental data which is usually rather limited. Here we report the characterization and certification of high-dimensional entanglement in photon pairs, encoded in temporal modes. Building upon recently developed theoretical methods, we certify an entanglement of formation of 2.09(7) ebits in a time-bin implementation, and 4.1(1) ebits in an energy-time implementation. These results are based on very limited sets of local measurements, which illustrates the practical relevance of these methods.

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Anthony Martin, Thiago Guerreiro, Alexey Tiranov, Sébastien Designolle, Florian Fröwis, Nicolas Brunner, Marcus Huber, Nicolas Gisin. 2017-02-15. Quantifying photonic high-dimensional entanglement. https://doi.org/10.1103/physrevlett.118.110501

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