Experimental linear optics controlled-NOT gates
Geoff J. Pryde, Jeremy L. O’Brien, Andrew G. White, Timothy C. Ralph, T. B. Bell, Nathan K. Langford, Gerard J Milburn · 2003
Elements of the coincidence-CNOT (controlled-NOT) are experimentally demonstrated, which includes a bright photon source with good spatial mode quality; nonclassical interferometry; improved photon detection; and tomographic analysis. The logical circuit of the coincidence-CNOT is described in the paper.