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We propose to use two complementary experimental ultracold-gas setups with strongly magnetic dysprosium and chromium atoms, in order to explore what general laws drive the dynamics of a long-range interacting closed quantum system. In both cases, the system will first be set out of equilibrium, and

Spontaneous emission limits efficient control of light-matter interactions and is detrimental for many applications ranging from quantum information to metrology (e.g. photon storage, photon-spin interfaces, quantum metrology). By harnessing quantum collective effects (e.g. sub-radiance), we propose

The QUINS project will exploit a novel non-classical source of light at extreme wavelengths based on high harmonic generation in semiconductor to develop a correlation-based quantum microscope. The harmonic emission comes as a frequency comb of N-entangled photons with frequencies extending from the

In recent years, the development of Atom Interferometry (AI) enabled multiple breakthroughs ranging from fundamental to applied physics, and led to the realization of a new class of quantum sensors offering unprecedented performances. In such experiments, the measurement sensitivity fundamentally de

A semiconductor quantum dot (QD) inserted in a nanowire (NW) is an ideal platform for quantum light sources emitting single photons or entangled photon pairs with high brightness. Two major bottlenecks prevent semiconductor QD from further large-scale integration: 1) QDs formed via a self-assembled

Quantum hardware has been steadily progressing in the last years. Amongst the highlights, a few of the most advanced approaches: superconducting qubits, cold atoms, ions and photonic qubits, have recently overcome the symbolic 100 qubit mark. Yet, the search for new physical and material platforms w

Aside from quantum processors, superconducting quantum circuits have brought numerous developments in lossless microwave components. A notorious example is the demonstration of superconducting quantum limited amplifiers (QLA’s), resonant or traveling wave, which became an essential microwave compone

Spin-waves are propagating collective spin excitations of magnetic materials. In a classical approach, they are considered as potential information carriers in future logic and RF devices. Recently, spin-waves were proposed to mediate the long-distance entanglement of NV spin-qubits, a key bottlenec

Quantum simulation is one of the most advanced quantum technologies. Out of the setup developed during the last few years, Rydberg atoms arrays are one of the most (if not the most) advanced platform. Systems based on alkali Rydberg atoms array can emulate arbitrary spin Hamiltonian with up to 200 p

Quantum sensors harness the high sensitivity of quantum systems to external perturbations to accurately measure various physical quantities. Among the quantum systems employed for sensing purposes, the nitrogen-vacancy (NV) defect in diamond has garnered considerable attention as a magnetometer and

The question of dissipation in quantum many-body systems is a subject of considerable interest, for fundamental reasons – associated with the understanding of how many-body quantum correlations survive in presence of decoherence – and for the development of realistic platforms for quantum technologi

Grâce à sa capacité unique de détection biochimique, le THz est très prometteur pour une large gamme d'applications dans l'analyse des matériaux, la détection environnementale et les diagnostics de santé. Le THz est aussi utilisé pour la communication en espace libre à large bande passante, en explo

We propose to design, fabricate and measure a new hybrid qubit that combine bosonic and fermionic degrees of freedom in order to realize more robust quantum states.

Bell’s theorem shows that quantum correlations are nonlocal, that is fundamentally nonclassical. It had a profound impact on our understanding of what quantum correlations are or allow for, both for foundational reasons, and for concrete applications in certification of quantum devices and protocols

Anyons are entities that evade the standard classification of particles into bosons and fermions, as exchanging two of them leads to an arbitrary exchange phase for the two-body wavefunction that is neither 0 (bosons) or pi (fermions). They can exist in strongly interacting two-dimensional systems l

Over the past decade, the field of quantum computing has become a major driving force for both fundamental physics and engineering, with impressive milestones demonstrated on several competing platforms. But today, even for an expert in the field, it is still hazardous to predict which physical syst