About the project

Quantum key distribution is today the sole technology able to guarantee an absolutely secure solution for the cryptographic key exchange problem. Quantum key distribution, when implemented ideally, is guaranteed to be safe by the laws of quantum mechanics, and immune to eavesdropping.

On the other hand, quantum key distribution is an immature, cutting-edge technology that is still being developed into a user-friendly, commercially-viable solution. This project aims to implement safe quantum communications technologies in real-world environments, by means of a prototypical quantum link between Italy and the island of Malta realised utilising an existing submarine telecommunication optical fibre link.

The project partners

SEQUEL will be realised through an ambitious collaboration bringing together three partners in two countries.



The National Research Council (CNR) is the largest public research institution in Italy, the only one under the Research Ministry performing multidisciplinary activities. Founded in 1923, CNR’s mission is to promote research through its own Institutes. Among these, the National Institute of Optics (Istituto Nazionale di Ottica, CNR-INO) has been working for over ninety years in the broad field of Optics, updating its activities in line with the huge innovations that have characterised this field over the last century. Its main activities include pure and applied research, technology transfer, and training. These are accompanied by metrology, consulting, and testing services for both public institutions and private companies.



INRIM is a public research centre acting as Italy's national metrology institute (NMI). INRIM realises, maintains and develops the national reference standards of the measurement units of the International System (SI), consisting of seven base units - metre, kilogram, second, ampere, kelvin, mole and candela - and of derived units. Thanks to these standards, the Institute is able to ensure measurements that are reliable and comparable on both a national and international scale. Basic and applied research in many fields - such as materials science, nanoscience, quantum optics, studies on the fundamental constants of physics - as well as the development of new measurement technologies and instruments enhance the metrology activity. In order to meet the needs of industry, INRIM operates at direct contact with the world of production and providing consultancy, calibration, and testing services.The Institute supports the National Laboratory Accreditation System by ensuring the quality of measurement standards and procedures and promoting the dissemination of the national standards of the SI measurement units.



L-UniversitĂ  ta' Malta (the University of Malta) is publicly funded and the highest teaching institution in Malta. It boasts of some 11,500 students including around 1,000 international students from 92 different countries and 450 visiting students, following full-time or part-time degree and diploma courses, many of them run on the modular or credit system. The university regularly hosts a large number of Erasmus and other exchange students. The degree courses at the University are designed to produce highly qualified professionals, with experience of research, who will play key roles in industry, commerce and public affairs in general. The quantum research group at the University of Malta is involved in a number of research activities ranging from theoretical quantum optics to quantum communication experiments. For more information visit here.

Publications & media

We have just left the starting blocks. Please check back later for technical publications as well as videos and other informative media.