Minimal state tomography of spatial qubits using a spatial light modulator
Wanderson M. Pimenta, Breno Marques, Marcio Carvalho, Mariana R. Barros, J. G. Fonseca, José Ferraz, Marcelo Terra Cunha, Sebastião Pádua · Optics Express · 2010
We report minimal quantum state tomography with spatial qubits created by a pair of parametric down converted twin-photons passing through a double-slit. A novel experimental setup is used, which includes a Spatial Light Modulator, as a fundamental tool, to reconstruct the state density matrix. The theory needed to perform a minimal quantum tomography is described. The density matrix is experimentally obtained for the two-qubit photonic states in spatial variables.