Complete Bell measurement on Ψ− ⊗ Ψ−

Abstract

Bell measurement is the corner stone for teleportation and entanglement swapping protocols. Still a complete setup that can distinguish all Bell sates has not been used in the realization of the protocols. We have tested a Bell measurement setup that can distinguish between all Bell states on a Ψ⁻ ⊗ Ψ⁻ product state.