Are two entangled photons described by the same wave function or wave function shape? Heres an example... Say for example, we have a lazer in TEM01 mode that is shooting individual photons (this mode as two distinct maxima). Then the individual photons are going through a BBO crystal to become a pair of entangled photons. The signal photon and the idler photon have different polarization though. Are they still described by the same wave function? Or do the two photons split up in different paths/wave functions?