Some properties and applications of biphoton states of three-mode light
В. Н. Горбачев, S. P. Kulik, Andrew I. Trubilko · Journal of Experimental and Theoretical Physics · 2008
Statistical properties, generation, and applications of three-mode biphoton fields with no more than one photon in each mode are discussed. Such field states have sub-Poissonian photon statistics and can be squeezed and entangled. The modes that simultaneously exhibit these properties in measurements are indicated. Two setups for generating such states via spontaneous parametric down-conversion are described. It is shown that the field states discussed in this study provide a quantum channel for teleportation, dense coding, and quantum key distribution.