Supervision : Damian MARKHAM

Co-supervision : GROSSHANS Frédéric

Theoretical aspects of Quantum Information Networks

The development of quantum information networks promises incredible benefits over conventional classical networks. The possibility of connecting quantum devices (from full blown quantum computers to small sensing or communication devices) is already understood to offer many advantages including enhanced network security, distributed quantum sensing, delegated quantum computing, and exponential advantages in communication complexity. Yet there are many open questions about what more these networks might offer, how they will be different from classical networks, and what these differences will mean in terms of how we run these quantum networks. The candidate will explore these questions, for example looking at routing, complex quantum networks, emergent behaviours and the role of quantumness in quantum network advantage. The position will be hosted in the Quantum Information team in LIP6-Sorbonne Univeristy, Paris, France and be carried out in close collaboration with the Japanese-French Laboratory for Informatics, Tokyo, Japan. There will be opportunities for travel to Japan. The environment in the QI team is vibrant and interdisciplinary, and the candidate will have the opportunity to work with theoretical physicists, computer scientists, experimentalists and experts on classical networks. They will also benefit from two quantum information institutes we are part of, the Quantum Information Centre Sorbonne, Paris Centre for Quantum Computation (pcqc.fr). We are also involved in several national and international collaborative projects on quantum information networks. The LIP6 QI team has gender parity for permanent research staff. The JFLI is computer science CNRS international research laboratory based in Tokyo across three sites, the NII, University of Tokyo and Keio University, which has quantum computing as one of its focused topics.

2023-2024 Publications

• 2024
  • U. Meyer, I. Šupić, D. Markham, F. Grosshans : “Bell Nonlocality from Wigner Negativity in Qudit Systems”, (2024)
  • U. Meyer, I. Šupić, F. Grosshans, D. Markham : “Self-Testing Graph States Permitting Bounded Classical Communication”, (2024)
• 2023
  • U. Meyer, F. Grosshans, D. Markham : “Inflated Graph States Refuting Communication-Assisted LHV Models”, Physical Review A, vol. 108 (1), pp. 012402, (American Physical Society) (2023)