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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…
Close-coupled model of Feshbach resonances in ultracold He* and He* atomic Collisions
T. M. F. Hirsch, D. G. Cocks, S. S. Hodgman
Helium atoms in the metastable state (He) have unique advantages for ultracold atomic experiments. However, there is no known accessible Feshbach resonance in He$^…
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…