Fibre Wavelength Quantum Networks (FQNet)

Lead Research Organisation: University of Sheffield
Department Name: Electronic and Electrical Engineering

Abstract

The Sheffield team with the National Epitaxy Facility will demonstrate entangled LEDs emitting at the commercially important fibre wavelength of 1550nm. Building on work in two previous IUK projects, the team will develop new LED structures that optimise single photon light extraction and allow the LEDs to be demonstrated in a GHz clocked high fidelity quantum network. The complete system will be demonstrated with our industrial partners Toshiba and BT Labs and will provide a major step forward in demonstrating the feasibility of solid-state entangled LED systems for high fidelity Quantum Key Distribution (QKD) fibre networks and the overall development of quantum communications technologies.

Planned Impact

Exploitable outcomes will include IPR and technology related to single photon generation, growth of quantum dots and fabrication of quantum devices suitable for quantum relays and quantum key distribution operating at GHz frequencies. We will exploit the outcomes of the project through a close interaction with the EPSRC Quantum Technology Hubs, particularly the York hub developing quantum communications technologies in close partnership with Toshiba research labs with a major demonstration of the technology in complete QKD system demonstrator with BT labs.
We will also explore exploitation in schemes for eye-safe quantum enhanced LIDAR in the Quantum Imaging Hub (Glasgow) and other areas where high coherence times in fully developed LED structures will have a major impact.

Dissemination will be achieved through patent publications, scientific papers (eg recent reports by the applicants on quantum light generation have been published in Nature, Nature Photonics, Nature Communications and Applied Physics Letters) and presentations at relevant international conferences (such as Photonics West, ECOC, OFC, CLEO, CLEOEurope, QCrypt, QCMC).
The know-how developed in the project will be added to the capabilities of the National Epitaxy Facility and will be available as a resource for the broader UK academic community through EPSRC, IUK or EU research grants. This significantly increases the leverage of the project through dissemination into a broader set of R&D projects and other applications areas such as telecommunication lasers and detectors.
TREL chair the Industry Standardisation Group (ISG) on Quantum Key Distribution (QKD) of the European Telecommunication Standards Institute. We expect the outcomes of this project to contribute to the active work item of the ISG on Components used for QKD. This is defining how quantum components should be tested and specified for QT system integrators, which is an important dissemination activity for stimulating QT component supply chains.

We will disseminate to industry and potential customers via press releases and feature articles in the specialist press (such as Photonics Spectra), taking part in InnovateUK dissemination events and joint publicity with the EPSRC QT Hubs. An Exploitation Advisory Group will advise the project on exploitation of project results. The initial membership of the EAG includes representatives from the EPSRC QT Hubs and senior industrialists and researchers with experience of technology and business innovation.
Sheffield University is a partner in the EPSRC Photonics Manufacturing Hub with Southampton University and the results of this work will be developed further in this Hub where key aspects of Manufacturability will be addressed in collaboration with the industrial partners.

Publications

10 25 50
 
Description Further control of methods to produce single photon sources for quantum communications and quantum information processing. We have developed techniques fro making semiconductor LEDs that emit single photon sources at the correct wavelength for fibre communications.
Exploitation Route Is being used in a major industrial consortium supported by IUK project Aquasec to develop the supply chain for Quantum Communications systems that would provide ultimate security in telecommunications.
Sectors Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Education,Electronics,Financial Services, and Management Consultancy,Government, Democracy and Justice

 
Description Formed the basis for a major part of the IUK funded ISCF project Aquasec. This large £8m consortium of industries, which include wafer manufacturers (IQE), and communications systems providers (BT) is developing a critical supply chain for quantum industry in the UK and the work established at University of Sheffield form a major component of the technology supply chain into this project and its industrial follow-up.
First Year Of Impact 2019
Sector Electronics,Financial Services, and Management Consultancy,Manufacturing, including Industrial Biotechology,Security and Diplomacy
Impact Types Societal

 
Description 'Hetero-print': A holistic approach to transfer-printing for heterogeneous integration in manufacturing
Amount £5,541,652 (GBP)
Funding ID EP/R03480X/1 
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Sector Public
Country United Kingdom
Start 06/2018 
End 05/2023
 
Description Agile Quantum Safe Communications (AQuaSec)
Amount £5,802,826 (GBP)
Funding ID 104615 
Organisation Innovate UK 
Sector Public
Country United Kingdom
Start 11/2018 
End 03/2021
 
Title Improvement to epitaxy of quantum dots 
Description The work led to improvements in the ability to grow telecoms wavelength single quantum dots for quantum information processing and quantum communications applications. The new knowledge on how to grow these dots by the MOVPE epitaxy process has been incorporated into the National Epitaxy Facility's expertise at the university of Sheffield and hence available to researchers across the UK. 
Type Of Material Improvements to research infrastructure 
Year Produced 2019 
Provided To Others? Yes  
Impact The work led to improvements in the ability to grow telecoms wavelength single quantum dots for quantum information processing and quantum communications applications. The new knowledge on how to grow these dots by the MOVPE epitaxy process has been incorporated into the National Epitaxy Facility's expertise at the university of Sheffield and hence available to researchers across the UK. The work has also led to the development of new grants and to the inclusion of the University of Sheffield in the new Phase II Quantum Technology Hub at the University of York. 
 
Description Conference presentation 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Third sector organisations
Results and Impact Presentation of results on InAs quantum dot single photon sources at the International Conference on Metal Organic Vapour Phase Epitaxy (Nara, Japan, 2-5 June 2018)
Year(s) Of Engagement Activity 2018