Deutsch's algorithm with topological charges of optical vortices via non-degenerate four-wave mixing

Abstract

We propose a scheme to implement the Deutsch's algorithm through non-degenerate four-wave mixing process. By employing photon topological charges of optical vortices, we demonstrate the ability to realize the necessary four logic gates for all balanced and constant functions. We also analyze the feasibility of the proposed scheme on the single photon level.

8 pages, 5 figures