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Free keywords:
Optics; Physics; entanglement; Schmidt number measurement; high-gain parametric down
conversion; Bloch-Messiah decomposition;
Abstract:
In this work we estimate the transverse Schmidt number for the bipartite high-gain parametric down conversion state by means of second-order intensity correlation function measurement. Assuming that the number of modes is equal in both beams we determine the Schmidt number considering only one of the subsystems. The obtained results demonstrate that this approach is equally efficient over the whole propagation of the state from the near field to the far field regions of its emitter.
