For entangled photons crossing a scattering medium, shaping one photon gives η≈(π/4)N, shaping both before the medium gives η≈(π/4)^2 N, while symmetric same-mode detection can restore correlations with η≈N, and post-medium shaping reaches up to about 4.6N numerically.
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Fundamental Bounds of Wavefront Shaping of Spatially Entangled Photons
For entangled photons crossing a scattering medium, shaping one photon gives η≈(π/4)N, shaping both before the medium gives η≈(π/4)^2 N, while symmetric same-mode detection can restore correlations with η≈N, and post-medium shaping reaches up to about 4.6N numerically.