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In PhotonicQRC we will implement a disruptive photonic quantum reservoir computer for the first time. Quantum reservoir computing combines novel machine learning with quantum physics: a complex, un-optimized coherent quantum state (the reservoir) is linearly transformed to emulate a target quantum s

Distributed quantum computing and quantum networks will require quantum interconnects: bi-directional, high-efficiency microwave/optical frequency converters. The advent of such applications is bound to the existence of converters fabricated with Very Large Scale Integration (VLSI) processes. This i

L'informatique quantique fait actuellement l'objet d'attentes élevées de la part des grandes entreprises et des gouvernements du monde entier. L’existence d’ordinateurs quantiques universels repose sur la capacité à corriger les erreurs au cours du calcul. Il existe divers schémas de calcul quantiqu

The past three years have witnessed the striking discovery of twisted multilayer graphene as a versatile plateform to realize quantum phases of matter in a controlled setting. Recent experiments have demonstrated tunable superconductivity, correlated insulators and topological phases. These phases e

Atom interferometry is a technology that allows measurements to be performed with extreme precision and accuracy. It has been applied to the measurement of several physical quantities, covering inertial quantities, atomic polarizations and fundamental physical constants, such as the Newtonian gravit

Emerging topological excitations such as Majorana zero modes (MZM) drive an important effort of research worldwide. The challenge tackled by the MITIQ project will be the implementation of the first topological qubit. It relies on the control of the topological excitations via well controlled textur

The main purpose of this project is to develop and exploit an all-optical quantum processor, able to chain a succession of operations on light pulses stored in a multi-register quantum memory. This device will allow the implementation of iterative protocols able to efficiently generate arbitrary qua

SecNISQ aims at developing a platform for multi clients-server distributed quantum computing. While currently some quantum devices are remotely accessible, providing integrity as well as privacy of data processing remains a challenging task that we aim to address in this project. We have recently

In recent years, high kinetic inductance superconducting materials (HKIM) have gained a lot of interest in quantum circuit technologies. Operated in the microwave frequency domain they allow to engineer high impedance circuits providing an efficient way to e.g. increase the coherence time of superco

Photons are well-controlled information-carrying particles, but do not form many-body systems by lack of interactions. Can we artificially provide photons with strong long-range interactions? A positive answer would profoundly impact both quantum technologies and our understanding of complex many-bo

Entanglement is the most distinctive and counter-intuitive feature of quantum mechanics. Recently, it has been used to characterize special phases of matter and transitions. In addition, entanglement represents the main limitation to the simulation of quantum matter on ordinary computers. In this pr

Les détecteurs supraconducteurs de photon unique (SSPD) sont au coeur de nombreuses applications dont l’imagerie par temps de vol et les systèmes de cryptographie quantique. Ils sont constitués de nanofils supraconducteurs polarisés près de leur courant critique. L'absorption d’un photon (visible ou

The solid states systems, presently considered for quantum computation, are built from localized two-level systems. Due to the fact that they are localized, they require a fixed amount of hardware per qubit. In contrast, photon-based qubits are the only existing quantum technology that uses propagat

The recent progress in quantum nano-electronics have given rise to the emerging field of electron quantum optics. It is now possible to generate, manipulate and characterize quantum electrical currents carrying one to few electron excitations within quantum Hall edge channels and to use them to gene

This project aims to measure and manipulate the quantum state of an ultracoherent macroscopic mechanical resonator by coupling it to a superconducting qubit. This type of resonator, oscillating in the MHz domain, and with a lifetime exceeding 1 minute, could be used to store quantum information on-c

Interacting many-body systems in low dimensions offer surprises and challenges for experimentalists and theorists. One-dimensional (1D) systems are unique in nature as the effect of interactions and correlations is enhanced since the particles cannot circumvent each other, making the study of arbitr

In the steep path towards fault-tolerant quantum computation with superconducting circuits, various recent experiments point towards a same roadblock for achieving high-fidelity operations well above the error correction threshold. For yet poorly understood reasons, the quantum properties of Josephs

Quantum technologies have the potential to lead to significant improvements for precision measurements. Among them, superradiant (SR) lasers are composed of an atomic ensemble placed inside a high-finesse Fabry-Perot cavity and rely on quantum correlations to generate an enhanced collective spontane

Quantum computers are perhaps the most anticipated of all potential quantum technologies. They provide a quantum advantage that makes it possible to solve problems that lie beyond the reach of classical devices. Yet, the fundamental question “Which physical property lies at the basis of the computa

The E-SCAPE project aims to implement position-controlled scalable single-photon emitters (SPEs) in hexagonal boron nitride (hBN). We will use an original top-down approach based on a new family of colour centres in hBN that can be locally activated using an electron beam. The SPEs present advantage

In WAQUAM, a new generation of photonic quantum memory architecture will be developed, in order to allow for high performance on-demand storage of quantum information. Such devices are of central importance for the development of quantum networks, in which quantum information is generated, manipulat