Quantum detection systems for quantum communications

Lead Research Organisation: University of Bristol
Department Name: Physics

Abstract

Quantum communications is a fast-growing fields with applications currently being demonstrated, to allow for un hackable communications between parties. Quantum optics is scaled by using Si photonics foundries to design circuits to manipulate photons to perform quantum information experiments. Currently engineering of a fully enclosed quantum detection system to concentrate resources into a central point for the end user. In this thesis we describe a quantum communication network inception using high dimensional entanglement distribution of photons via multicore fibre. Motivating a superconducting nanowire single photon detector (SNSPD) hub containing many detectors and the time tagging using an FPGA system used to allow for an enclosed cryogenic station system. We then finally address the improvement of detection efficiency of SNSPDs by modelling a ring cavity detector, optimised for short wave infrared wavelengths, addressing practicalities using a multi-mode crosser to minimise losses.

Publications

10 25 50

Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/N509802/1 30/09/2016 30/03/2022
1852207 Studentship EP/N509802/1 14/11/2016 13/02/2021 Ben Slater