Search
Stochastic Quantum Evolutions – ESQuisses
Our research project is centered around the notion of randomness in quantum theory. There are three main ways in which probabilistic phenomena appear in quantum mechanics: - as models for typical quantum states and operations, usually described by random matrices - intrinsically, as the results
Miniaturized Multi-axis Quantum Sensors – MiniXQuanta
Objective 1: Development of new methods for multidimensional inertial measurements using cold atoms We aim to demonstrate the experimental implementation of new methods for multidimensional inertial measurements using interferometers with free falling cold atoms. We developed a protocol of atom o
Realizing arbitrary quantum operations on a mechanical oscillator – MANIOC
Quantum optomechanics and electromechanics is a fast growing field with promising applications in quantum information. Recently non-classical mechanical states have been realized. However, full control of a quantum mechanical mode, which is necessary for successful quantum information processing bas
Probing and verifying large-scale quantum technologies via randomized measurements – QRand
There is a strong ongoing effort in developing quantum technologies made of cold atoms, superconducting qubits, etc. These experimental platforms can be used to build quantum simulators, which are systems of artificial quantum matter that can emulate the many-body physics of key quantum phenomena (h
Quantum magnetomechanics: exploring and exploiting coherent interactions between single spins and single phonons – Q-MAGMECH
The decoherence of spins comes from their coupling to a phonon bath. To address single spins, existing approaches generally try to fight against this phononic decoherence while engineering magnetic or electric coupling to photons. However, this approach either suffers from the weak magnetic coupling
Nonlocal Electronic Wavefunctions engineered in Superconducting circuits – NEWS
In quantum mechanics, a particle or an ensemble of particles are described by wavefunctions, which can in principle spread over arbitrarily large distances. This nonlocality is a specificity of quantum mechanics that has no equivalent in classical physics. For Einstein and others, nonlocality was an
Dissipation-engineered atom arrays – DEAR
This project aims at engineering collective dissipation in an atomic ensemble by tailoring its interaction with a resonant driving field. This control on collective spontaneous emission will allow to build a new kind of dissipative quantum simulator. We will use its control to suppress dissipation b
Cosmology and Quantum Simulation – COSQUA
We propose an investigation of phonon entanglement in a periodically modulated Bose-Einstein condensate (BEC). This modulation can give rise to correlated phonons and by analogy with electrodynamics, it is often referred to as the dynamical Casimir effect. The effect also has a deep analogy with the
Hybrid Ion Traps for Quantum Computing: Embedded-Glass Ion-Trap on Si Interposer for Large Scale Integration – HIT
Quantum information processing holds the promise to improve classical techniques taking advantage on the unique properties (e.g. entanglement) of quantum bits. Laser cooled trapped ions are an ideal system for the realization of such an idea. Miniaturized surface ion traps allow for scalability, but
Silicon Photonics for high dimension frequency entanglement applications – SPHIFA
Information stands nowadays as one of the major global resources. As emphasized alongside the current Covid19 crisis, our society relies on an ever-increasing need to process and communicate data, with important repercussions in politics, healthcare, innovation, everyday life, and global economy. A
Superconducting quantum circuits to close the electrical metrology triangle – TRIANGLE
As highlighted by the recent overhaul of the International System of Units, quantum technologies can have a strong impact on metrology. An important milestone towards quantum-defined metrology is to bridge the two existing electric quantum standards, the Josephson Voltage Standard (JVS) and the Quan
Nothing is perfect: defects in hexagonal boron nitride – NOTISPERF
Point defects in crystals occur when an atom is missing or is in an irregular position. After an initial skepticism, they spiked interest because of their possible applications as qubits in quantum computers. A strong and stable photoluminescence at room temperature (RT) and a single photon emission
Synthetic non-local Hamiltonians for quantum information protection – SYNCAMIL
The goal of this project is to implement an autonomously protected quantum bit (qubit) in a high impedance Josephson circuit parametrically modulated by a magnetic field with a frequency comb structure. In an extreme impedance regime now attainable in circuitQED experiments, coherent charge tunnelin
Mobile Ytterbium Optical Clock Applied to Geodesic Exploration – ROYMAGE
In this project, we propose to build a transportable optical clock based on ytterbium atoms and to explore applications of this device to geodesy and geodynamics. The frequency of an atomic clock being sensitive to the geopotential caused by mass distribution , measuring the frequency shift between