Sean Ravenhall
A5079778523- Atomic and Subatomic Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Dark Matter and Cosmic Phenomena
University of Oxford
2020-2021
PA Consulting Group
2021
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...
Magneto-optical traps (MOTs) are widely used for laser cooling of atoms. We have developed a high-flux compact cold-atom source based on pyramid MOT with unique adjustable aperture that is highly suitable portable quantum technology devices, including space-based experiments. The adjustability enabled an investigation into the previously unexplored impact size atomic flux, and optimisation allowed us to demonstrate higher flux than any reported sources use pyramid, LVIS, 3D-MOT or grating...
We have used a pyramid magneto-optical trap (MOT) to create compact source of cold rubidium atoms. The four dielectric-coated metal mirrors in vacuum are arranged the form that creates light field for MOT from single ingoing laser beam. atoms pushed out through hole (aperture) apex pyramid, direction determined by light, give flux Rb-87 greater than 2 × 10^10 per second with mean velocity 33 m/s (FWHM 28 m/s) and divergence 58 mrad. has unique mechanism adjusting aperture size it is highly...