Transport of Orbital-Angular-Momentum Entanglement through a Turbulent Atmosphere
classification
🪐 quant-ph
keywords
entanglementorbital-angular-momentumquantumangularatmosphereatmosphericcapacitychannel
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We demonstrate experimentally how orbital-angular-momentum entanglement of two photons evolves under influence of atmospheric turbulence. We find that the quantum channel capacity is surprisingly robust: Its typical horizontal decay distance is of the order of 2 kilometers, demonstrating the potential of photonic orbital angular momentum for free-space quantum communication in a metropolitan environment.
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