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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 …

Section III : La prison …