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Observing the decay of orbital angular momentum entanglement, through experimentally simulated turbulence

Authors :
Ibrahim, Alpha Hamadou
Roux, Filippus S.
Goyal, Sandeep
McLaren, Melanie
Konrad, Thomas
Forbes, Andrew
Publication Year :
2012
Publisher :
arXiv, 2012.

Abstract

We study the evolution of an orbital angular momentum (OAM) entangled bipartite photonic state for the case where one of the photons propagates through Kolmogorov turbulence, using the concurrence as a measure of entanglement. Quantum state tomography was performed to reconstruct the two qubit density matrices for a range of scintillation strengths. Our results give the first direct experimental confirmation of the existing theories for decay of entanglement due to atmospheric turbulence. We also show how the modal scattering increases with increasing scintillation and we discuss the impact of the scale at which entanglement dissipates due to atmospheric turbulence on free-space quantum communication.<br />Comment: 5 pages, 5 figures

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....58d67edd9f37cb0bd65edb20aab97065
Full Text :
https://doi.org/10.48550/arxiv.1210.2867