Manipulating single-photons at will : Application to quantum information and quantum metrology

Sergey A. Magnitskii, Dmitry N. Frolovtsev, D. P. Agapov +3 more

Christophe Couteau, Stefanie Barz, Thomas Durt +6 more

Shigeki Takeuchi

Recent technological progress in the generation, manipulation and detection of individual single photons has opened a new scientific field of photonic quantum information. This progress includes the realization of single photon switches, photonic quantum circuits with specific functions, and the application of novel photonic states to novel optical metrology beyond the limits of standard optics. In this review article, the recent developments and current status of photonic quantum information technology are overviewed based on the author's past and recent works.

Christian Bonato

This work concerns the generation of optical entangled states by means of parametric down-conversion and their applications in the fields of quantum metrology and quantum information. Particularly we studied the manipulation of multiparameter entanglement by means of adaptive optics, demonstrating a way to improve entanglement visibility with type-II downconversion in the case of large detection apertures and a spatial counterpart to quantum dispersion-cancellation. Moreover, we worked on satellite quantum information, demonstrating the feasibility of single photon exchange between a LEO satellite and a ground station.

Teodor Strömberg

Vlatko Vedral, Martin Bodo Plenio, M. A. Rippin +1 more