Projet de recherche doctoral numero :8366


Date depot: 28 juillet 2022
Titre: Secure Network of Quantum Sensors
Directeur de thèse: Damian MARKHAM (LIP6)
Directrice de thèse: Eleni DIAMANTI (LIP6)
Domaine scientifique: Sciences et technologies de l'information et de la communication
Thématique CNRS : Algorithmique quantique

Resumé: Two of the main areas of quantum technologies are communication and sensing. In communication, by exchanging quantum systems and sharing entanglement we have security and efficiency that cannot be achieved classically. In sensing, using quantum probes allows for precision and sensitivity beyond any possible measurement based on classical physics. As we move towards a quantum internet, where quantum devices of different sizes and applications are connected through classical and quantum channels, it is natural to consider the possibility of merging the incredible benefits of quantum sensing and communication. Indeed in an ‘internet of quantum things’ combining security, efficiency with the super classical measurements, for example ensuring sensing data is secure and trusted, would appear to suggest much possibility for great advantage. We imagine a network of sensors, of all different kinds, with different applications, connected by quantum and classical channels, and we want to push the limits of what can be done, by incorporating cutting edge quantum cryptographic techniques and ideas. Networking quantum sensors is already understood to offer many benefits. Entangling sensors allows sensing global fields or features over a network (such as total or average field strength), with applications for novel synchronisation of clocks and telescope alignments to name a few. Clearly any additional security and efficiency is greatly beneficial here. Even without entangling the sensors themselves, the capacity to delegate sensing, or securely communicate the results in a trusted, possibly anonymous, way has many promising applications. One could imagine many sensors deployed across a network (for example of cars, or medical devices), that wish to securely share sensitive data locally collected. Previous works looking at combining quantum security with quantum sensing, though inspiring, have often lacked cryptographic rigor, leaving them open to security loopholes. In a recent work, we make the first steps to address these issues, developing formal notions of security for sensing, and provide new, secure, protocols for delegated (two party) quantum sensing. In this project we will develop a formal framework for secure sensing in networks, combining rigorous cryptographic techniques with sensing. Building on recent work of, we will enable more involved network sensing scenarios (multiparty, multiparameter, various levels of trust and mistrust), and develop towards near term practical implementations. - Develop a formal framework for security for networks of quantum sensors - Develop proposals for proof of principle experiments demonstrating quantum advantage in networks of sensors

Doctorant.e: Scheiner Santiago