Author: Maarten
Dr Maarten Hoogerland is the group leader of the Quantum Information Laboratory at the University of Auckland
Doctor Thomas
Breakthrough paper published!
We have determined the energy difference between two quantum states in the helium atom with unprecedented accuracy, a ground-breaking discovery that contributes to our understanding of the universe and space-time and rivals the work of the world’s most expensive physics project, the Large Hadron Collider. Our understanding of the universe and the forces that govern… Continue Reading Breakthrough paper published!
Thermalisation paper published!
We experimentally and numerically investigate thermalization processes of a trapped 87Rb Bose gas, initially prepared in a nonequilibrium state through partial Bragg diffraction of a Bose-Einstein condensate (BEC). The system evolves in a Gaussian potential, where we observe the destruction of the BEC due to collisions and subsequent growth of a new condensed fraction in… Continue Reading Thermalisation paper published!
Thermalisation paper submitted!
Abstract: We experimentally and numerically investigate thermalization processes of a trapped 87Rb Bose gas, initially prepared in a non-equilibrium state through partial Bragg diffraction of a Bose-Einstein condensate (BEC). The system evolves in a Gaussian potential, where we observe the destruction of the BEC due to collisions, and subsequent growth of a new condensed fraction… Continue Reading Thermalisation paper submitted!
Spectroscopy article submitted!
Abstract: Improvements in both theory and frequency metrology of few- electron systems such as hydrogen and helium have enabled increasingly sen- sitive tests of quantum electrodynamics (QED), as well as ever more accurate determinations of fundamental constants and the size of the nucleus. At the same time advances in cooling and trapping of neutral atoms… Continue Reading Spectroscopy article submitted!
Two-dimensional simulator online!
An extensive revamp of our setup has enabled the study of 2D physics using ultracold atoms. The details of the setup are published here: Haase, T. A., White, D. H., Brown, D. J., Herrera, I., & Hoogerland, M. D. (2017). A versatile apparatus for two-dimensional atomtronic quantum simulation. The Review of scientific instruments, 88 (11)10.1063/1.5009584… Continue Reading Two-dimensional simulator online!
Tapered optical fibre paper published!
A new research facility, using tapered optical fibres as an interface between trapped, ultracold atoms and light propagating in an optical fibre, has come online. The first results were published recently here: Ruddell, S. K., Webb, K. E., Herrera, I., Parkins, A. S., & Hoogerland, M. D. (2017). Collective strong coupling of cold atoms to… Continue Reading Tapered optical fibre paper published!
Kiwi
A kiwi from the atom lab to brighten your day. All kiwis are made from atoms – the only difference is that the one on the right was made today from rubidium atoms. The image is made with 20000 atoms expanding from a Bose-Einstein Condensate of rubidium atoms in a plane (the plane is made… Continue Reading Kiwi
Poster session with Bill Phillips
Nobel prize winner Bill Phillips was in Auckland. We had an excellent discussion at a poster session!