Résultats de recherche

Résumé Quantum communication networks enable applications ranging from highly secure communica-tion to clock synchronization and distributed quantum computing. Miniaturized, flexible, and cost-efficient resources will be key elements for ensuring the …

Résumé Quantum metrology is widely accepted as one of the most advanced pillars of quantum information, where quantum effects lead to enhanced precision measurements of unknown quantities. On the other hand, quantum cryptography uses quantum systems to …

Résumé In this talk I will present the research I carried out along the last few years as postdoc at the Centre de Nanosciences et de Nanotechnologies (C2N, Université Paris-Saclay). I will start introducing basic concepts of quantum optics, continuous …

Résumé Due to the special no-cloning principle, quantum states appear to be very useful in cryptography. But this very same property also has drawbacks: when receiving a quantum state, it is nearly impossible for the receiver to efficiently check …

Résumé Negativity of the Wigner function is arguably one of the most striking non-classical features of quantum states. Beyond its fundamental relevance, it is also a necessary resource for quantum speedup with continuous variables. As quantum …

Résumé In measurement-based quantum computing (MBQC), computation is carried out by a  sequence of measurements and corrections on an entangled state. Flow, and related concepts, are powerful techniques for characterising the dependence of the corrections …

Résumé In recent years, many quantum machine learning algorithms have been proposed that can potentially offer significant speedup over corresponding classical algorithms. In this talk, we will discuss what is needed for a full-scale, fault-tolerant, …

Résumé Inferring the underlying physical state of a system from measurement  results is a fundamental task in physics. Remarkably, quantum mechanics enables the strongest form of inference:  there exist states known to be fully characterized (up to local …

Résumé Quantum physics proved to have an edge for outstanding applications in computation and cryptography.  Whether quantum technologies can help us facing the forthcoming energetic crisis remains, however, an open question.  In this work, we analyze the …