Quantum Communications Based on Spatial-Division-Multiplexing Optical Fibers
March 19th, 2019 GUILHERME B. XAVIER Linköpings Universitet

Quantum communications (QC) is one of the main pillars of Quantum Technologies. QC’s main goal is to transmit as faithfully as possible individual or entangled photonic quantum states over appropriate communication channels. Under most scenarios optical fibres are ideal for this purpose. Recent developments in optical communications have produced optical fibers with new refraction index profiles capable of taking advantage of multiple transverse spatial modes of a light beam to multiplex independent data channels. In this talk, I will discuss the first experiments aimed at taking advantage of these new optical fibers in order to improve QC protocols. More specifically, I will present recent results on high-dimensional quantum key distribution over multi-core fibers, as well as the impacts of multiplexing high-speed data channels and single-photons in the same multi-core fiber.

Seminar, March 19, 2019, 15:00. ICFO’s Blue Lecture Room

Hosted by Valerio Pruneri