Universal entanglement decay of photonic orbital angular momentum qubit states in atmospheric turbulence: an analytical treatment
David Bachmann, Vyacheslav N Shatokhin, Andreas Buchleitner
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Source: Crossref
Published: Sep 12, 2019
DOI: 10.1088/1751-8121/ab3f3c
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Abstract We study the entanglement evolution of photonic orbital angular momentum qubit states with opposite azimuthal indices l 0 , in a weakly turbulent atmosphere. Using asymptotic methods, we deduce analytical expressions for the amplitude of turbulence-induced crosstalk between the modes l 0 and − l 0 . Furthermore, we analytically establish distinct, universal entanglement decay laws for Kolmogorov’s turbulence model and for two approximations thereof.
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