inIdEx QuanTech@Paris

inIdEx QuanTech
@Paris

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Our consortium brings together about 70 permanent staff members with highly complementary expertise: computer science at IRIF and Inria, theoretical and experimental physics at MPQ, APC, and LPL, as well as history and philosophy of sciences at SPHERE.

Institut de Recherche en Informatique Fondamentale (IRIF)

The research conducted at IRIF is based on the study and understanding of the foundations of all computer science, in order to provide innovative solutions to the current and future challenges of digital sciences. In particular, IRIF is renowned for its contributions to the design and analysis of algorithms, the study of computational and data representation models, the foundations of programming languages, software development, verification, and certification. IRIF also conducts interdisciplinary research taking advantage of its scientific approach.

The research topics related to QuanTech@Paris include computational foundations of quantum computing, quantum algorithms, use cases for quantum software development, nonlocality theory, quantum logic.

Related research groups and activities

Algorithms and complexity
- Development of new quantum algorithms
- Studies of the limit of quantum computing
- Identification of use cases
- Popularization of quantum information processing
Proofs and programs
Development of the theoretical foundations of quantum programming langages

Inria Paris / COSMIQ

COSMIQ (COdes, SyMétrIque et Quantique) is an Inria project-team based in Paris. The team is mostly devoted to the design and analysis of cryptographic algorithms, in the classical or in the quantum setting.

The research topics related to QuanTech@Paris include quantum information theory and cryptography.

Related research activities

COSMIQ
- New cryptanalysis, classical or quantum, in symmetric and asymmetric cryptography
- New designs of classical symmetric and asymmetric primitives or quantum primitives that are resistant against a classical and quantum adversary
- Designing quantum low-density parity check codes for quantum error correction

Laboratoire Matériaux et Phénomènes Quantiques (MPQ)

The MPQ laboratory specializes in the study of frontier quantum materials and the development of novel quantum devices. These activities rely on a broad range of theoretical and experimental expertise in condensed matter physics, transport, and optics, as well as technological platforms for clean-room fabrication, spectroscopy, and high-resolution electronic microscopy.

The research topics related to QuanTech@Paris span quantum communications, quantum metrology, quantum computing and simulations. Ongoing device development includes integrated quantum photonic chips, trapped-ion chips, and optomechanical sensors, alongside fundamental studies of quantum materials such as 2D materials and superconductors.

Related research groups and activities

Group QITE (Quantum Information Technologies)
- Experimental quantum photonics: semiconductor entangled photon sources, quantum state engineering, quantum metrology, quantum communication
- Theory of photon-based quantum information, quantum metrology, quantum optics and quantum computing
- Experimental platform based on laser-cooled trapped ions: miniaturized traps, scaling and integration of devices, sympathetic cooling and ion-photon quantum interfaces.
Group THEORIE
- Strongly correlated quantum materials, equilibrium and non-equilibrium many-body physics, critical phenomena, quantum optics, transport and quantum information.
Group LIME (Light and Mechanics)
- Fundamental opto-mechanics: quantum behavior of mechanical systems, decoherence phenomena at mesoscopic scales
- Applied opto-mechanics: optical and mechanical sensors
Group SQUAP (Spectroscopy of quasi-particles)
- Experimental study of interacting electrons in quantum materials: electronic and topological orders, quantum phases and electron correlations in materials.

Laboratoire Astroparticule et Cosmologie (APC) / VIRGO

The Virgo/Einstein Telescope experimental group at the APC laboratory has been involved for nearly ten years in reducing quantum noise in current (Virgo, LIGO, KAGRA) and future (Einstein Telescope, Cosmic Explorer) interferometric gravitational wave detectors, particularly through quantum squeezing techniques.

The research topics related to QuanTech@Paris include quantum metrology and quantum enhanced gravitational wave detectors using squeezed states.

Related research activities

Experimental detection of gravitational waves
Quantum-enhanced (squeezed) laser beams

Laboratoire de Physique des Lasers (LPL)

The LPL studies light-mater interactions conducting experiments that range from fundamental physics to applied research often at the interface with other scientific disciplines such as nanotechnologies, chemistry and biology. The LPL is a leader in the DIM DIM QuanTiP initiative and has developed the REFIMEVE network in collaboration with the LNE-SYRTE.

The research topics related to QuanTech@Paris include atom-based quantum simulators, superfluid in restricted geometries, quantum control of complex molecules, light-matter quantum interfaces, quantum metrology, increased sensitivity using ultra-stable REFIMEVE references.

Related research groups and activities

Group GQM (Gaz Quantiques Magnétiques)
- Magnetic properties of a quantum Chromium (Cr) gas with strong dipole-dipole interactions
- Manipulation of Strontium (Sr) atoms of spin 9/2 in optical lattices
- Ultra-narrow supper-radiant laser from a jet of Sr atoms flying through a cavity.
Group BEC (Condensats de Bose-Einstein)
- Manipulation of rubidium (Rb) quantum gases confined in exotic traps (spheres, bubbles…)
- One dimensional sodium (Na) quantum gas on an atom-chip and their interactions with microwaves.
Group SAI (Spectroscopie Atomique aux Interfaces)
- Measurements of the Casimir-Polder interaction using confined atomic and molecular gases
- Quantum sensing with Rydberg atoms: Near field microscopy of THz metasurfaces
Group OIA (Optique et Interférométrie Atomiques)
- Casimir-Polder metrology with a slow atom beam diffracting on a home-made nanograting
- Quantum walk atoms diffracted through multiple gratings
Group MMTF (Metrologie Molécules et Tests Fondamentaux)
- High resolution spectroscopy of a buffer gas cooled molecular beam for fundamental physics measurements (parity violation, variation of fundamental constants…)
- Transfer of ultra-stable frequency and time references via an optical link (REFIMEVE)
- Transfer of stable frequency references through the telecommunications frequency range

Sciences, Philosophie, Histoire (SPHERE)

The research carried out by SPHERE is deeply rooted in the content of scientific disciplines. All fields are represented: mathematics, physics, life sciences and medicine. The aim of SPHERE’s work is to integrate these disciplines into an interactive system that takes into account different approaches: epistemological, philosophical, historical, linguistic, sociological and anthropological, while at the same time respecting the content and methods of these scientific fields.

The research topics related to QuanTech@Paris include a long-standing research activity in the history and philosophy of measurement.

Related research activities

History and philosophy of measurement in physics
Units, computational and algorithmic procedures in the ancient worlds
Historical and philosophical aspects of the introduction and acceptation of quantum optics: the roots of quantum cryptography, quantum simulation, quantum metrology, and quantum computing