Dr Robert Bettles, MPhys (Dunelm), PhD (Dunelm)
Originally from Ceredigion in West Wales, I moved to Durham in 2008 where I studied for a four year integrated masters in theoretical physics, followed by a PhD in the Atomic and Molecular group here. Having finished my PhD in May 2016, I am now doing a postdoc with Professors Simon Gardiner, Charles Adams and Ifan Hughes.
I am interested in the interaction of light with dense atomic ensembles. In particular, my work has focussed on the modification of this atom-light interaction due to strong dipole-dipole interactions between the atoms. This cooperative behaviour can, for example, manifest as a modified decay rate (superradiance and subradiance), shifted energy levels, Fano resonances, and modified scattering properties. I have been particularly interested in the cooperative behaviour of periodic atomic arrays.
Level 1 Foundations tutor (2016/17), Foundations 2B workshop demonstrator (2012-15)
Department of Physics
- Bettles, Robert J., Minář, Jiří, Adams, Charles S., Lesanovsky, Igor & Olmos, Beatriz (2017). Topological properties of a dense atomic lattice gas. Physical Review A 96(4): 041603(R).
- Bettles, Robert J., Gardiner, Simon A. & Adams, Charles S. (2016). Cooperative eigenmodes and scattering in one-dimensional atomic arrays. Physical Review A 94(4): 043844.
- Bettles, Robert J., Gardiner, Simon A. & Adams, Charles S. (2016). Enhanced optical cross section via collective coupling of atomic dipoles in a 2D array. Physical Review Letters 116(10): 103602.
- Bettles, R.J., Gardiner, S.A. & Adams, C.S. (2015). Cooperative ordering in lattices of interacting two-level dipoles. Physical Review A 92(6): 063822.