A5029572979- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Atomic and Subatomic Physics Research
- Quantum optics and atomic interactions
- Photonic and Optical Devices
- Geophysics and Gravity Measurements
- Quantum Mechanics and Applications
- Geophysical and Geoelectrical Methods
- Quantum Information and Cryptography
- Geophysics and Sensor Technology
- Advanced Fiber Optic Sensors
- Advanced Fiber Laser Technologies
- Advanced Materials Characterization Techniques
- Spectroscopy and Laser Applications
- Nonlinear Photonic Systems
- Ionosphere and magnetosphere dynamics
- Seismic Waves and Analysis
- Dark Matter and Cosmic Phenomena
- Scientific Measurement and Uncertainty Evaluation
- GNSS positioning and interference
- Additive Manufacturing Materials and Processes
- Metallic Glasses and Amorphous Alloys
- Strong Light-Matter Interactions
- Geophysical Methods and Applications
- Stellar, planetary, and galactic studies
University of Birmingham
2015-2024
Birmingham City University
2024
Weatherford College
2023
Universidade de São Paulo
2014-2016
We outline the experimental concept and key scientific capabilities of AION (Atom Interferometer Observatory Network), a proposed programme using cold strontium atoms to search for ultra-light dark matter, explore gravitational waves in mid-frequency range between peak sensitivities LISA LIGO/Virgo/ KAGRA/INDIGO/Einstein Telescope/Cosmic Explorer experiments, probe other frontiers fundamental physics. would complement planned searches as well mergers involving intermediate-mass black holes...
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...
Abstract The sensing of gravity has emerged as a tool in geophysics applications such engineering and climate research 1–3 , including the monitoring temporal variations aquifers 4 geodesy 5 . However, it is impractical to use cartography resolve metre-scale underground features because long measurement times needed for removal vibrational noise 6 Here we overcome this limitation by realizing practical quantum gradient sensor. Our design suppresses effects micro-seismic laser noise, thermal...
A metasurface optical chip allows the generation of cold atoms with a single-beam magneto-optical trap (MOT) system.
The high precision and scalable technology offered by atom interferometry has the opportunity to profoundly affect gravity surveys, enabling detection of features either smaller size or greater depth. While such systems are already starting enter into commercial market, significant reductions required in order reach size, weight power conventional devices. In this article, potential for based gravimetry is assessed, suggesting that key resides within development gradiometry sensors enable...
A frequency doubled I/Q modulator based optical single-sideband (OSSB) laser system is demonstrated for atomic physics research, specifically atom interferometry where the presence of additional sidebands causes parasitic transitions. The performance OSSB technique and spectrum after second harmonic generation are measured analyzed. removed with better than 20 dB suppression, influence transitions upon stimulated Raman at varying spatial positions shown to be beneath experimental noise. This...
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...
A method for the agile generation of optical frequencies required laser cooling and atom interferometry rubidium is demonstrated. It relies on fiber Bragg grating technology to filter output an electro-optic modulator was demonstrated in alignment-free, single-seed, frequency-doubled system. The system capable frequency switching over a 30 GHz range less than 40 ns, with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD">...
This paper outlines the centralized design and production of ultra-high-vacuum sidearm laser-stabilization systems for AION Ultra-Cold Strontium Laboratories. Commissioning data on residual gas steady-state pressures in chambers, magnetic field quality, laser stabilization, loading rate 3D magneto-optical trap are presented. Streamlining stabilization enabled Collaboration to build equip parallel five state-of-the-art Laboratories within 24 months by leveraging key expertise collaboration....
Recent advances in the understanding and control of quantum technologies, such as those based on cold atoms, have resulted devices with extraordinary metrological performance. To realise this potential outside a lab environment size, weight power consumption need to be reduced. Here we demonstrate use laser powder bed fusion, an additive manufacturing technique, production technique relevant manufacture sensors. As demonstration constructed two key components using manufacturing, namely...
We experimentally generate two-dimensional Jones-Roberts solitons in a three-dimensional atomic Bose-Einstein condensate by imprinting triangular phase pattern. By monitoring their dynamics we observe that this kind of solitary waves are resistant to both dynamic (snaking) and thermodynamic instabilities, usually known strongly limit the lifetime dark plane dimensions higher than one. additionally find signatures possible dipole-like interaction between them. Our results confirm stable...
Quantum sensors based on cold atoms are being developed which produce measurements of unprecedented accuracy. Due to shifts in atomic energy levels, quantum often have stringent requirements their internal magnetic field environment. Typically, background fields attenuated using high permeability shielding, with the cancelling residual and introduction quantisation implemented coils inside shield. The shield, however, distorts all fields, including those generated sensor. Here, we...
The extraordinary performance offered by cold atom-based clocks and sensors has the opportunity to profoundly affect a range of applications, for example in gravity surveys, enabling long term monitoring applications through low drift measurements. While ground-based devices are already starting enter commercial market, significant improvements robustness reductions size, weight, power required such be deployed Unstaffed Aerial Vehicle systems (UAV). In this article, we realise first step...
This paper reports on a detailed performance characterization of recently developed optical single-sideband (OSSB) laser system based an IQ modulator and second-harmonic generation for rubidium atom interferometry experiments. The measured is used to evaluate the noise contributions this OSSB when it applied drive stimulated Raman transitions in $^{87}$Rb precision measurements gravitational acceleration. suppresses unwanted sideband components, but additional phase shift compensation needs...
Abstract Large-scale atom interferometers promise unrivaled strain sensitivity to mid-band gravitational waves, and will probe a new parameter space in the search for ultra-light scalar dark matter. These proposals require gradiometry with kilometer-scale baselines, momentum separation above 10 4 ℏ k between interferometer arms, optical transitions long-lived clock states reach target sensitivities. Prohibitively high power wavefront flatness requirements have thus far limited maximum...
We present experiments on ensemble cavity quantum electrodynamics with cold potassium atoms in a high-finesse ring cavity. Potassium-39 are cooled two-dimensional magneto-optical trap and transferred to three-dimensional which intersects the mode. The apparatus is described detail first observations of strong coupling presented. Collective light demonstrated via splitting transmission spectrum avoided crossing normal modes.
Abstract “Cold atoms” can be used as ultra-sensitive sensors for measuring accelerations and are capable of mapping changes in the strength gravity across surface Earth. They could offer significant benefits to existing space based sensing capabilities. Gravity already many Earth observation applications including monitoring polar ice mass, ocean currents sea level. Cold atom enable higher resolution measurements which would allow smaller water sources discovery new underground natural...
Borehole gravity sensing can be used in a number of applications to measure features around well, including rock-type change mapping and determination reservoir porosity. Quantum technology sensors, based on atom interferometry, have the ability offer increased survey speeds reduced need for calibration. While surface sensors been demonstrated real world environments, significant improvements robustness reductions radial size, weight, power consumption are required such devices deployed...
The UK National Quantum Technology Hub in Sensors and Metrology is one of four flagship initiatives the Program. As part a 20-year vision it translates laboratory demonstrations to deployable practical devices, with game-changing miniaturized components prototypes that transform state-of-the-art for quantum sensors metrology. It brings together experts from Universities Birmingham, Glasgow, Nottingham, Southampton, Strathclyde Sussex, NPL currently links over 15 leading international...
We proposed the European Laboratory for Gravitation and Atom-interferometric Research (ELGAR), an array of atom gradiometers aimed at studying space-time gravitation with primary goal observing gravitational waves (GWs) in infrasound band a peak strain sensitivity $3.3 \times 10^{-22}/\sqrt{\text{Hz}}$ 1.7 Hz. In this paper we detail main technological bricks large scale detector emphasis research pathways to be conducted its realization. discuss site options, optics, source requirements...
We propose and demonstrate a scheme for Doppler compensated optical cavity enhancement of atom interferometers at significantly increased mode diameters. This overcomes the primary limitations in interferometry, circumventing linewidth limit enabling spatial filtering, power enhancement, large beam diameter simultaneously. approach combines magnified linear with an intracavity Pockels cell. The cell induces voltage-controlled birefringence allowing frequencies to follow Raman lasers as they...