48 citations · 129 across the 9 of their papers we have counts for
9 papers
Metrology and Many-Body Physics with Ultracold Metastable Helium
Jacob A Ross
Ultracold dilute gases provide ideal settings for measurements of atomic structure. Helium has an internal structure sufficiently simple to permit highly accurate predictions of it…
Trap Frequency Measurement with a Pulsed Atom Laser
B. M. Henson, K. F. Thomas, Z. Mehdi +4
We describe a novel method of single-shot trap frequency measurement for a confined Bose-Einstein Condensate, which uses an atom laser to repeatedly sample the mean velocity of tra…
Measurement of a helium tune-out frequency: an independent test of quantum electrodynamics
B. M. Henson, J. A. Ross, K. F. Thomas +9
Despite quantum electrodynamics (QED) being one of the most stringently tested theories underpinning modern physics, recent precision atomic spectroscopy measurements have uncovere…
On the survival of the quantum depletion of a condensate after release from a magnetic trap
J. A. Ross, P. Deuar, D. K. Shin +4
We present observations of the high momentum tail in expanding Bose-Einstein condensates of metastable Helium atoms released from a harmonic trap. The far-field density profile exh…
Rapid generation of metastable helium Bose-Einstein condensates
A. H. Abbas, X. Meng, R. S. Patil +3
We report the realisation of Bose-Einstein condensation (BEC) of metastable helium atoms using an in-vacuum coil magnetic trap and a crossed beam optical dipole trap. A novel quadr…
Frequency measurements of transitions from the state to the , , and states in ultracold helium
Jacob A. Ross, Kieran F. Thomas, Bryce M. Henson +4
We perform laser absorption spectroscopy with ultracold He atoms to measure the energy intervals between the level and five levels in the n = 5 manifold. The lase…
Entanglement-based 3D magnetic gradiometry with an ultracold atomic scattering halo
D. K. Shin, J. A. Ross, B. M. Henson +2
Ultracold collisions of Bose-Einstein condensates can be used to generate a large number of counterpropagating pairs of entangled atoms, which collectively form a thin spherical sh…
Approaching the adiabatic timescale with machine-learning
Bryce M. Henson, Dong K. Shin, Kieran F. Thomas +4
The control and manipulation of quantum systems without excitation is challenging, due to the complexities in fully modeling such systems accurately and the difficulties in control…
Widely tunable, narrow linewidth external-cavity gain chip laser for spectroscopy between 1.0 - 1.1 um
Dong K. Shin, Bryce M. Henson, Roman I. Khakimov +5
We have developed and characterised a stable, narrow linewidth external-cavity laser (ECL) tunable over 100 nm around 1080 nm, using a single-angled-facet gain chip. We propose the…