Search

Project Overview This project will support a collaboration between researchers in the United States and France that will both explore and enhance the potential of nanowire-based devices for quantum information science. The project will design, create, and characterize nanowire-based quantum-limite

Characterizing the strain in nanoscale silicon devices is of high relevance in the context of both classical and quantum information processing. Strain can be seen alternatively as a source of inhomogeneity to be overcome, or as a vector for interaction between quantum systems. Established character

Project GANDALF is set in the context of Quantum Information exploiting multipartite entanglement in observables with a continuous spectrum (also known as continuous variable regime, CV). Its main scope is to provide new experimental and conceptual tools to fully characterize multipartite states of

Precision measurements are among the most important applications of atomic, molecular and optical science, from atomic frequency standards to exploration of fundamental physics, such as physics beyond the standard model or as a benchmark for the most accurate theoretical calculations. On the one han

Identifying and characterizing new physical systems suitable as improved quantum resources is at the heart of the next generation of quantum research and technology. For example, spin based implementations controlled by light allow for applications in optical quantum communication, hybrid optomechan

The objective of this project is to develop single-photon sources (SPS) that emit at telecom wavelengths, a critical advancement necessary for enabling long-distance quantum communications and realizing a photonic quantum processor. The transparency windows of optical fibers enable quantum communica

The quantum simulation program is based on the ability to create experimental systems whose behavior is precisely described by a Hamiltonian, having meticulously controlled properties. The certification of effective models describing these experimental devices is thus a crucial aspect of this progra

Analogue quantum simulations enable the laboratory study of quantum field theories on curved spacetime via the equivalence between the kinematics of excitations in material systems and of massless quantum fields in astrophysics. For example, a giant vortex flow in quantum fluids allows to simulate f

The SYMPATHIQUE project proposes a novel representation of quantum data as algebraic variety with a symplectic structure. This approach is inspired by the compact tableau representation of stabilizer states. On the quantum circuit level this corresponds to adding the Toffoli gate to the stabilizer f

Materials imperfections in superconducting quantum circuits—in particular, two-level-system (TLS) defects—are a major source of decoherence, ultimately limiting the performance of qubits. Thus, identifying the microscopic origin of possible TLS defects in these devices and developing strategies to e

Hexagonal boron nitride (hBN) has recently emerged as a very promising two-dimensional material for quantum information applications. It combines high-quality single-photon sources that can be controllably positioned, with the ability to realise integrated photonic circuits, opening the way to effic

The CHOCOLAT aims to investigate theoretically and experimentally optical properties of a single quantum emitter (SQE) determistically incorporated at exceptional points of one and two-dimensional (1D and 2D) photonic nanostructures. A first challenge, tackled in WP1, is to design and calculate the

Waveguide Quantum Electrodynamics (WQED) studies the interaction between multiple quantum emitters and a guided electromagnetic (EM) mode. This domain is foreseen as key for quantum technology development and has been flourishing with theoretical proposals ranging from quantum information protocols,

Over the past few decades, quantum cryptography has evolved into a commercially viable technology, with quantum key distribution (QKD) as its flagship application. QKD enables distant parties to exchange cryptographic keys whose security is guaranteed by the laws of quantum mechanics rather than com

Quantum operations form an important pillar of quantum theory and a key point for many applications to quantum technologies. Traditionally, quantum operations were only viewed as devices to transform quantum states, such as quantum communication channels between distant parties or quantum gate eleme

Quantum simulators using Rydberg atoms to emulate interacting-spin physics have been particularly successful in the last decade. They rely on the strong dipole-dipole interaction between Rydberg levels. However, their scope of application is limited by the lifetime of the laser-accessible low-orbita

Photonic quantum technologies promise revolutionary applications such as high-speed, long-distance, and ultra-secure communication over an envisioned quantum internet. Non-Gaussian bosonic systems are required for crucial quantum information processing tasks and without them we lose many significant

High-numerical-aperture optics have started a new era for the field of cold atoms by enabling high-resolution imaging and control, towards applications in quantum simulations and quantum computing, up to manipulation of single-atom arrays. Controlled Rydberg-mediated atom-atom interactions establish

The ability to manipulate single atoms and atomic ions at the most fundamental quantum level forms the basis for their application in quantum technologies. Achieving the same level of control over molecules would open up exciting new prospects in this field. However, the complex energy-level structu

Probing the quantum nature of gravity poses a significant challenge in physics. Due to the weak nature of gravity, experiments focusing on gravitational interactions encounter obstacles. While there has been extensive study of interactions among astronomical objects, there have been relatively few e

Why is it so difficult to obtain a robust qubit? One with a long coherence time, enabling engineers to move beyond research and development and build working quantum computers? Classical bits are immune to noise below a certain threshold, corresponding to the energy to physically flip between 0 and