Linear optical implementation of nonlocal product states and their indistinguishability
Angelo C. M. Carollo, G. Massimo Palma, Christoph Simon, Anton Zeilinger · Physical Review A · 2001
In a recent paper, Bennett et al. [Phys. Rev. A 59, 1070 (1999)] have shown the existence of a basis of product states of a bipartite system with manifest nonlocal properties. In particular these states cannot be completely discriminated by means of bilocal measurements. In this paper we propose an optical realization of these states and we will show that they cannot be completely discriminate by means of a global measurement using only optical linear elements, conditional transformation, and auxiliary photons.