A5050080838- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Atomic and Subatomic Physics Research
- Geophysics and Sensor Technology
- Pulsars and Gravitational Waves Research
- Mechanical and Optical Resonators
- Seismic Waves and Analysis
- Photonic and Optical Devices
- Scientific Measurement and Uncertainty Evaluation
- Advanced Fiber Optic Sensors
- Geophysics and Gravity Measurements
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Photonic Crystal and Fiber Optics
- Advancements in Semiconductor Devices and Circuit Design
- Particle Detector Development and Performance
- Radio Astronomy Observations and Technology
- Laser Design and Applications
- Radioactive Decay and Measurement Techniques
- Experimental and Theoretical Physics Studies
- Solid State Laser Technologies
- Gyrotron and Vacuum Electronics Research
- Distributed and Parallel Computing Systems
- Dark Matter and Cosmic Phenomena
- Orbital Angular Momentum in Optics
Centre National de la Recherche Scientifique
2014-2024
Laboratoire Photonique, Numérique et Nanosciences
2014-2024
Institut d’Optique Graduate School
2014-2024
Université de Bordeaux
2014-2021
University of Southampton
2020
Systèmes de Référence Temps-Espace
2004-2018
Laboratoire Souterrain à Bas Bruit
2017
Université Paris Sciences et Lettres
2016
Sorbonne Université
2008-2016
Deleted Institution
2008-2014
We have developed an atom interferometer providing a full inertial base. This device uses two counter-propagating cold-atom clouds that are launched in strongly curved parabolic trajectories. Three single Raman beam pairs, pulsed time, successively applied three orthogonal directions leading to the measurement of axis rotation and acceleration. In this purpose, we introduce new gyroscope using butterfly geometry. discuss present sensitivity possible improvements.
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
We present an underground long baseline atom interferometer to study gravity at large scale. The hybrid atom-laser antenna will use several interferometers simultaneously interrogated by the resonant mode of optical cavity. instrument be a demonstrator for gravitational wave detection in frequency band (100 mHz - 1 Hz) not explored classical ground and space-based observatories, interesting potential astrophysical sources. In initial configuration, standard interferometry techniques adopted,...
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around world to discuss exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter gravitational waves. primary objective was lay groundwork an international TVLBAI proto-collaboration. collaboration aims unite researchers different institutions strategize...
We present here an analysis of the sensitivity a time-domain atomic interferometer to phase noise lasers used manipulate wave-packets. The function is calculated in case three pulse Mach-Zehnder interferometer, which configuration two inertial sensors we are building at BNM-SYRTE. successfully compare this calculation experimental measurements. limited by lasers, as well residual vibrations. evaluate performance that could be obtained with state art quartz oscillators, impact phase-lock...
We present the full evaluation of a cold atom gyroscope based on interferometry. have performed extensive studies to determine systematic errors, scale factor and sensitivity. demonstrate that acceleration noise can be efficiently removed from rotation signal allowing reach fundamental limit quantum projection for short term measurements. The technical limits long sensitivity accuracy been identified, clearing way next generations ultra-sensitive gyroscopes.
We propose a new detection strategy for gravitational waves (GWs) below few hertz based on correlated array of atom interferometers (AIs). Our proposal allows us to reduce the Newtonian noise (NN), which limits all ground GW detectors hertz, including previous interferometry-based concepts. Using an long baseline AI gradiometers yields several estimations NN, whose effect can thus be reduced via statistical averaging. Considering km current optical detectors, NN rejection factor 2 could...
Abstract We summarise the discussions at a virtual Community Workshop on Cold Atoms in Space concerning status of cold atom technologies, prospective scientific and societal opportunities offered by their deployment space, developments needed before atoms could be operated space. The technologies discussed include atomic clocks, quantum gravimeters accelerometers, interferometers. Prospective applications metrology, geodesy measurement terrestrial mass change due to, e.g., climate change,...
We report correlations in underground seismic measurements with horizontal separations of several hundreds meters to a few kilometers the frequency range 0.01Hz 40Hz. These could threaten science goals planned interferometric gravitational-wave detectors such as Einstein Telescope well atom interferometers MIGA and ELGAR. use from four different sites, i.e. former Homestake mine (USA) two candidate sites for Telescope, Sos Enattos (IT) Euregio Maas-Rhein (NL-BE-DE) site housing detector,...
Recent developments in quantum technology have resulted a new generation of sensors for measuring inertial quantities, such as acceleration and rotation. These can exhibit unprecedented sensitivity accuracy when operated space, where the free-fall interrogation time be extended at will environment noise is minimal. European laboratories played leading role this field by developing concepts tools to operate these relevant environment, parabolic flights, towers, or sounding rockets. With...
We study the influence of off-resonant two-photon transitions on high-precision measurements with atom interferometers based stimulated Raman transitions. These resonances induce a light shift resonant condition. The impact this effect is investigated in two highly sensitive experiments using gravimeter and gyroscope-accelerometer. show that it can lead to significant systematic phase shifts, which have be taken into account order achieve best performances terms accuracy stability.
Abstract This article contains a summary of the White Paper submitted in 2019 to ESA Voyage 2050 process, which was subsequently published EPJ Quantum Technology (AEDGE Collaboration et al. Quant. Technol. 7 ,6 2020). We propose this concept for space experiment using cold atoms search ultra-light dark matter, and detect gravitational waves frequency range between most sensitive ranges LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. interdisciplinary experiment, called Atomic...
We present a novel atom interferometer configuration that combines large momentum transfer with the enhancement of an optical resonator for purpose measuring gravitational strain in horizontal directions. Using Bragg diffraction and taking advantage gain provided by resonator, we achieve up to $8\ensuremath{\hbar}k$ mW level power cm-sized resonating waist. Importantly, our experiment uses original design allows beam waist eliminates need trap atoms cavity modes. demonstrate inertial...
Abstract We describe the realization and characterization of a compact, autonomous fiber laser system that produces optical frequencies required for cooling, trapping, manipulation, detection 87 Rb atoms - typical atomic species emerging quantum technologies. This device, customized from Muquans company, is designed use in challenging operating environment Laboratoire Souterrain à Bas Bruit (LSBB) France, where new large scale atom interferometer being constructed underground MIGA antenna....
Gravitational Waves (GWs) were observed for the first time in 2015, one century after Einstein predicted their existence. There is now growing interest to extend detection bandwidth low frequency. The scientific potential of multi-frequency GW astronomy enormous as it would enable obtain a more complete picture cosmic events and mechanisms. This unique entirely new opportunity future astronomy, success which depends upon decisions being made on existing infrastructures. prospect combining...
Fluctuations of the earth's gravity field are a major noise source for ground-based experiments investigating general relativity phenomena such as Gravitational Waves (GWs). Mass density variations caused by local seismic or atmospheric perturbations determine spurious differential displacements free falling test masses, what is called Gravity Gradient Noise (GGN); it mimics GW effects. This GGN expected to become dominant in infrasound domain and must be tackled future realization...
Abstract We present a novel cold strontium atom source designed for quantum sensors. optimized the deceleration process to capture large velocity class of atoms emitted from an oven and achieved compact low-power setup capable generating high atomic flux. Our approach involves velocity-dependent transverse using two-dimensional magneto-optical trap. To enhance flux, we employ tailored magnetic fields that minimize radial beam expansion incorporate cascaded Zeeman-slowing configuration...
The Virgo interferometer is one of the big observatories aimed at detecting gravitational waves. This paper will describe + upgrades and commissioning work performed between first science run (VSR1) second (VSR2). Some results VSR2 be discussed, which was recently started with a good duty cycle an inspiral range for detection binary neutron–star inspirals 10 Mpc. To conclude, outlook given on some future detector.
We are building a hybrid detector of new concept that couples laser and matter-wave interferometry to study sub Hertz variations the strain tensor space-time gravitation. Using set atomic interferometers simultaneously manipulated by resonant optical field 200 m cavity, MIGA instrument will allow monitoring evolution gravitational at unprecedented sensitivity, which be exploited both for geophysical studies Gravitational Waves (GWs) detection. This infrastructure embedded into LSBB...
The MIGA project aims at demonstrating precision measurements of gravity with cold atom sensors in a large scale instrument and studying the associated applications geosciences fundamental physics. first stage (2013-2018) will consist building 300-meter long optical cavity to interrogate interferometers be based low noise underground laboratory LSBB Rustrel, France. second (2018-2023) dedicated science runs data analyses order probe spatio-temporal structure local field region, site high...
We propose a marginally stable optical resonator suitable for atom interferometry. The geometry is based on two flat mirrors at the focal planes of lens that produces large beam waist required to coherently manipulate cold atomic ensembles. Optical gains about 100 are achievable using optics with part-per-thousand losses. resulting power build-up will allow enhanced coherent manipulation wavepackets such as separation beamsplitters. study effect longitudinal misalignments and assess...
The Matter-Wave laser Interferometer Gravitation Antenna, MIGA, will be a hybrid instrument composed of network atom interferometers horizontally aligned and interrogated by the resonant field an optical cavity. This detector provide measurements sub Hertz variations gravitational strain tensor. MIGA bring new methods for geophysics characterization spatial temporal local gravity also demonstrator future low frequency Gravitational Wave (GW) detections. enable better understanding coupling...
First generation gravitational wave interferometer performances were affected by thermal effects and non-optimal coupling of the light into several optical cavities. Slow thermally induced beam-wavefront distortions can be compensated using deformable mirrors driven actuators. We propose a new device, where set heating actuators is placed in direct contact with reflecting surface mirror, enabling an efficient control its refractive index shape. This system particularly useful for in-vacuum...
Experiments in Atomic, Molecular, and Optical (AMO) physics require precise accurate control of digital, analog, radio frequency (RF) signals. We present hardware based on a field programmable gate array core that drives various modules via simple interface bus. The system supports an operating 10 MHz memory depth 8 M (223) instructions, both easily scalable. Successive experimental sequences can be stacked with no dead time synchronized external events at any instructions. Two or more units...