Tunable entanglement distillation of spatially correlated down-converted photons

摘要: We report on a new technique for entanglement distillation of the bipartite continuous variable state spatially correlated photons generated in spontaneous parametric down-conversion process (SPDC), where tunable non-Gaussian operations are implemented and post-processed is certified real-time using single-photon sensitive electron multiplying CCD (EMCCD) camera. The local performed filters modulated into programmable spatial light modulator and, by EMCCD camera actively recording probability distributions twin-photons, one has fine control Schmidt number distilled state. show that even simple can be finely tuned to ∼67% net gain initial SPDC process.