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Details of Grant 

EPSRC Reference: EP/R02216X/1
Title: Fibre Wavelength Quantum Networks (FQNet)
Principal Investigator: Ritchie, Professor DA
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Physics
Organisation: University of Cambridge
Scheme: Technology Programme
Starts: 01 October 2017 Ends: 31 March 2019 Value (£): 101,078
EPSRC Research Topic Classifications:
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:  
Summary on Grant Application Form
Quantum communications can guarantee the security of data transmission. Although the technology to achieve this is

proven over dedicated point-to-point links, the full potential will only be realised with multi-user quantum networks.

Quantum relays offer a platform which can provide this, allowing quantum keys to be teleported across fibre-optic networks.

Commercial uptake requires practical entangled light sources operating within the optimum telecom wavelength band

around 1550 nm, and thanks to an established InnovateUK funded project, such sources are emerging for the first time.

Our vision is to construct and operate such a quantum relay, making practical quantum networks a realistic opportunity. By

combining the proven expertise and experience of the partners together with a challenging workplan, we will create an

improved generation of entangled photon-pair light sources engineered to interact with laser light. Epitaxial material will be

grown at the University of Sheffield and processed into a range of novel device structures at the University of Cambridge. A

prototype quantum relay will be delivered by TREL, which will leverage our unique entangled light sources, to teleport

quantum information encoded on laser beams, as demonstration of a practical quantum network.
Key Findings
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Organisation Website: http://www.cam.ac.uk