90 citations · 435 across the 17 of their papers we have counts for
18 papers
Field validation of GNSS-independent positioning enhancement using a wearable ultra-stable quantum magnetometer
Stirling Scholes, Dominic Hunter, Courtney Dyer +8
Increasing the resilience of positioning systems that currently rely on Global Navigation Satellite System (GNSS) signals can be achieved by incorporating stable and sensitive meas…
High-Resolution Atomic Magnetometer-Based Imaging of Integrated Circuits and Batteries
Dominic Hunter, Marcin S. Mrozowski, Stuart J. Ingleby +7
Optically pumped magnetometers (OPMs) have emerged as a powerful technique for high-resolution magnetic field imaging. However, achieving sub-millimeter spatial resolution at sub-p…
Distributed network of optically pumped magnetometers for space weather monitoring
M. S. Mrozowski, A. S. Bell, P. F. Griffin +6
Spatial variation in the intensity of magnetospheric and ionospheric fluctuation during solar storms creates ground-induced currents, of importance in both infrastructure engineeri…
Longitudinal spin-relaxation optimization for miniaturized optically pumped magnetometers
A. P. McWilliam, S. Dyer, D. Hunter +7
The microfabrication of cesium vapor cells for optically pumped magnetometry relies on optimization of buffer gas pressure in order to maximize atomic coherence time and sensitivit…
Single-beam grating-chip 3D and 1D optical lattices
Alan Bregazzi, James P. McGilligan, Paul F. Griffin +2
Ultracold atoms are crucial for unlocking truly precise and accurate quantum metrology, and provide an essential platform for quantum computing, communication and memories. One of…
Real-time buffer gas pressure tuning in a micro-machined vapor cell
S. Dyer, A. McWilliam, D. Hunter +7
We demonstrate a controllable depletion of the nitrogen buffer gas pressure in a micro-machined cesium (Cs) vapor cell from the dynamic heating of an alkali dispenser pill. When th…
Free-induction-decay magnetic field imaging with a microfabricated Cs vapor cell
D. Hunter, C. Perrella, A. McWilliam +7
Magnetic field imaging is a valuable resource for signal source localization and characterization. This work reports an optically pumped magnetometer (OPM) based on the free-induct…
A tuneable wavelength reference for chip-scale laser cooling
S. Dyer, K. Gallacher, U. Hawley +6
We demonstrate a tuneable, chip-scale wavelength reference to greatly reduce the complexity and volume of cold-atom sensors. A 1 mm optical path length micro-fabricated cell provid…
Cold-atom shaping with MEMS scanning mirrors
Alan Bregazzi, Paul Janin, Sean Dyer +6
We demonstrate the integration of micro-electro-mechanical-systems (MEMS) scanning mirrors as active elements for the local optical pumping of ultra-cold atoms in a magneto-optical…
Micro-machined deep silicon atomic vapor cells
S. Dyer, P. F. Griffin, A. S. Arnold +4
Using a simple and cost-effective water jet process, silicon etch depth limitations are overcome to realize a mm deep atomic vapor cell. While the minimum silicon feature size…
A simple imaging solution for chip-scale laser cooling
A. Bregazzi, P. F. Griffin, A. S. Arnold +6
We demonstrate a simple stacked scheme that enables absorption imaging through a hole in the surface of a grating magneto-optical trap (GMOT) chip, placed immediately below a micro…
Enhanced observation time of magneto-optical traps using micro-machined non-evaporable getter pumps
Rodolphe Boudot, James P. McGilligan, Kaitlin R. Moore +5
We show that micro-machined non-evaporable getter pumps (NEGs) can extend the time over which laser cooled atoms canbe produced in a magneto-optical trap (MOT), in the absence of o…
Cold-atom clock based on a diffractive optic
Rachel Elvin, Gregory W. Hoth, Michael Wright +5
Clocks based on cold atoms offer unbeatable accuracy and long-term stability, but their use in portable quantum technologies is hampered by a large physical footprint. Here, we use…
A magneto-optic trap using a reversible, solid-state alkali-metal source
S. Kang, K. R. Moore, J. P. McGilligan +5
We demonstrate a novel way to form and deplete a vapor-cell magneto-optic trap (MOT) using a reversible, solid-state alkali-metal source (AMS) via an applied polarized voltage. Usi…
Grating chips for quantum technologies
James P. McGilligan, Paul F. Griffin, Rachel Elvin +3
We have laser cooled 3 Rb atoms to 3K in a micro-fabricated grating magneto-optical trap (GMOT), enabling future mass-deployment in highly accurate compact qu…
Diffraction grating characterisation for cold-atom experiments
James P. McGilligan, Paul F. Griffin, Erling Riis +1
We have studied the optical properties of gratings micro-fabricated into semiconductor wafers, which can be used for simplifying cold-atom experiments. The study entailed character…
Design and fabrication of diffractive atom chips for laser cooling and trapping
J. P. Cotter, J. P. McGilligan, P. F. Griffin +5
It has recently been shown that optical reflection gratings fabricated directly into an atom chip provide a simple and effective way to trap and cool substantial clouds of atoms [1…
Phase-space properties of magneto-optical traps utilising micro-fabricated gratings
James P. McGilligan, Paul F. Griffin, Erling Riis +1
We have used diffraction gratings to simplify the fabrication, and dramatically increase the atomic collection efficiency, of magneto-optical traps using micro-fabricated optics. T…