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Bounds and optimisation of orbital angular momentum bandwidths within parametric down-conversion systems


The measurement of high-dimensional entangled states of orbital angular momentum prepared by spontaneous parametric down-conversion can be considered in two separate stages: a generation stage and a detection stage. Given a certain number of generated modes, the number of measured modes is determined by the measurement apparatus. We derive a simple relationship between the generation and detection parameters and the number of measured entangled modes.

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Correspondence to F. M. Miatto.

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Miatto, F.M., Giovannini, D., Romero, J. et al. Bounds and optimisation of orbital angular momentum bandwidths within parametric down-conversion systems. Eur. Phys. J. D 66, 178 (2012).

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  • Topical issue: High Dimensional Quantum Entanglement. Guest editors: Sonja Franke-Arnold, Alessandra Gatti and Nicolas Treps