  Photon pairs produced in spontaneous parametric down-conversion are naturally
entangled in their transverse spatial degrees of freedom including the orbital
angular momentum. Pumping a non-linear crystal with a zero order Gaussian mode
produces quantum correlated signal and idler photons with equal orbital angular
momentum and opposite signs. Measurements performed on one of the photons
prepares the state of the other remotely. We study the remote state preparation
in this system from the perspective of its potential application to Quantum
Thermodynamics.
