  We demonstrate the control of entanglement of a single photon between several
spatial modes propagating through a strongly scattering medium. Measurement of
the scattering matrix allows the wavefront of the photon to be shaped to
compensate the distortions induced by multiple scattering events. The photon
can thus be directed coherently to a single or multi-mode output. Using this
approach we show how entanglement across different modes can be manipulated
despite the enormous wavefront disturbance caused by the scattering medium.
