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Details of Grant 

EPSRC Reference: EP/R043299/1
Title: Polarisation Entangled Photon Emitter
Principal Investigator: Clerici, Professor M
Other Investigators:
Hadfield, Professor RH Faccio, Professor DFA
Researcher Co-Investigators:
Project Partners:
Department: College of Science and Engineering
Organisation: University of Glasgow
Scheme: Technology Programme
Starts: 01 April 2018 Ends: 31 March 2019 Value (£): 143,629
EPSRC Research Topic Classifications:
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:  
Summary on Grant Application Form
Quantum technologies will transform and improve crucial aspects of our life. To name a few, they will protect our privacy, and secure digital communications from any cyber attack, push the speed of computers to new levels, enable imaging the faintest objects, with applications to security and healthcare.

While few of these outcomes are moving towards commercialisation, such as quantum-secured communications, others are still far from being a robust technology.

The UK government has invested substantial resources in promoting the translation of the science available in academic institutions into technologies for the benefit of the public.

For this quantum revolution to happen, we need to combine the know-how available in the academia, the technical capabilities of our high-tech companies, and the feedback from potential users of the technology.

With this proposal, we are following this receipt, targeting the development of the first commercial source of visible, entangled photons, suitable for applications ranging from secure communication to metrology.

Entangled light is the key to unlock the possibilities offered by quantum mechanics, and is the starting point for many applications, such quantum-key distribution and quantum computing. The components required to build an entangled light source are a laser and a suitable crystal that converts the laser light into entangled photons.

Chromacity is a UK leader in the market of laser systems while Covesion is a world leader in the supply of crystals for the generation of entangled photons. We propose therefore to partner with these companies bringing our know-how in quantum optics. The University of Glasgow is indeed a leading institution in the UK, and the world, for what concern quantum optics and quantum technologies. Together, we have the production capabilities, the engineering skills, and the supply chain, to bring a visible source of entangled photons on the market.

The role of the academic team in this project is twofold. On the one hand, we shall guide the design of the optical components required to generate the entangled states, starting from the technology provided by the two partner companies. We shall exploit our experience in the generation of entangled states in a lab to inform the two companies on the best choice of the nonlinear crystals parameters, the geometry of the laser interaction with the nonlinear elements, and on the proper measurement procedure required to quantify the level of entanglement achieved. This will be, therefore, a knowledge transfer action, aimed at bringing the academic know-how into a commercial reality. On the other hand, we will test the results produced by the joint work of Chromacity and Covesion. In this scenario, the University of Glasgow team will be the beta-tester. We are indeed end-users in the potential quantum-optical market since most of our research requires entangled states to be carried on. We shall, therefore, provide our feedback to the companies, concerning performances, packaging and user-friendliness. As the research in quantum optics becomes increasingly common in academia, a growing number of researchers will look for "plug and play" sources of entangled states.
Key Findings
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Potential use in non-academic contexts
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Date Materialised
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Organisation Website: http://www.gla.ac.uk