Transport of Orbital-Angular-Momentum Entanglement through a Turbulent Atmosphere
Bart-Jan Pors, C. H. Monken, Eric R. Eliel, J.P. Woerdman
TL;DR
This paper experimentally investigates how orbital-angular-momentum entanglement between two photons is affected by atmospheric turbulence, revealing its robustness over several kilometers for potential free-space quantum communication.
Contribution
It provides the first experimental analysis of OAM entanglement evolution in turbulent atmospheres, highlighting its suitability for metropolitan quantum networks.
Findings
Quantum channel capacity remains robust over ~2 km in turbulence.
Orbital-angular-momentum entanglement shows surprising resilience.
Potential for free-space quantum communication in urban environments.
Abstract
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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Taxonomy
TopicsSolar and Space Plasma Dynamics · Geophysics and Gravity Measurements · Cosmology and Gravitation Theories