The turbulence-induced decay of orbital-angular-momentum (OAM) entanglement between two photons is investigated numerically and experimentally. To compare our resultswith previouswork,we simulate the turbulent atmosphere with a single phase screen based on the Kolmogorov theory of turbulence.We consider two different scenarios: in the first only one of the two photons propagates through turbulence, and in the second both photons propagate through uncorrelated turbulence. Comparing the entanglement evolution for different OAM values, we found the entanglement to be more robust in turbulence for higher OAM values. We derive an empirical formula for the distance scale at which entanglement decays in terms of the scale parameters and the OAM value.
Reference:
Hamadou Ibrahim, A, Roux, FS, McLaren M, Konrad, T and Forbes, A. 2013. Orbital-angular-momentum entanglement in turbulence. Physical Review A, vol. 88, pp 1-10
Hamadou Ibrahim, A., Roux, F., McLaren, M., Konrad, T., & Forbes, A. (2013). Orbital-angular-momentum entanglement in turbulence. http://hdl.handle.net/10204/6915
Hamadou Ibrahim, A, FS Roux, M McLaren, T Konrad, and A Forbes "Orbital-angular-momentum entanglement in turbulence." (2013) http://hdl.handle.net/10204/6915
Hamadou Ibrahim A, Roux F, McLaren M, Konrad T, Forbes A. Orbital-angular-momentum entanglement in turbulence. 2013; http://hdl.handle.net/10204/6915.
Copyright: 2013 American Physical Society. This is an Open Access journal. This journal authorizes the publication of the information herewith contained. Published in Physical Review A, vol. 88, pp 1-10
