From Multimode Nonlinear Optics to HighDimensional Quantum Communications

TYPESolid State Institute Seminar
Speaker:Kfir Sulimany
Affiliation:The Hebrew University of Jerusalem, Israel
Time:12:30 - 13:30
Location:Solid State Auditorium(Entrance)
Remark:Visitor of Associate Professor Ido Kaminer



Quantum photonics often relies on nonlinear optics for the generation of photons, followed by reconfigurable linear optical networks for coherent control. In this talk, I will review our study of multimode nonlinear optics in fibers, which also enabled our realization of an all-fiber entangled photon pairs source. These photons are spatially entangled in the eigenmodes of the multimode fiber, allowing for high-dimensional quantum communications. I will then present a couple of methods to coherently control such states. The first is achieved by multiplane light conversion based on a spatial light modulator, while the second is by employing a “Fiber piano”; a piezo-actuator array that deforms the multimode fiber. Finally, I will introduce a novel Quantum Key Distribution protocol that utilizes high-dimensional encoding to boost the secure key rate and its experimental implementation


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