Engineering multipartite coupling in doubly pumped parametric down-conversion processes
Engineering multipartite coupling in doubly pumped parametric down-conversion processes
We investigate the quantum state generated by optical parametric down-conversion in a ${\ensuremath{\chi}}^{(2)}$ medium driven by two noncollinear light modes. The analysis shows the emergence of multimode, namely, three- or four-mode, entangled states in a subset of the spatiotemporal modes generated by the process. These appear as bright spots against …