Tunable entanglement distillation of spatially correlated down-converted photons.


Journal article


E. S. Gómez, P. Riquelme, M. A. Solís-Prosser, P. González, E. Ortega, G. Xavier, G. Lima
Optics express, 2018

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APA   Click to copy
Gómez, E. S., Riquelme, P., Solís-Prosser, M. A., González, P., Ortega, E., Xavier, G., & Lima, G. (2018). Tunable entanglement distillation of spatially correlated down-converted photons. Optics Express.


Chicago/Turabian   Click to copy
Gómez, E. S., P. Riquelme, M. A. Solís-Prosser, P. González, E. Ortega, G. Xavier, and G. Lima. “Tunable Entanglement Distillation of Spatially Correlated down-Converted Photons.” Optics express (2018).


MLA   Click to copy
Gómez, E. S., et al. “Tunable Entanglement Distillation of Spatially Correlated down-Converted Photons.” Optics Express, 2018.


BibTeX   Click to copy

@article{e2018a,
  title = {Tunable entanglement distillation of spatially correlated down-converted photons.},
  year = {2018},
  journal = {Optics express},
  author = {Gómez, E. S. and Riquelme, P. and Solís-Prosser, M. A. and González, P. and Ortega, E. and Xavier, G. and Lima, G.}
}

Abstract

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