



@article {1506,
	title = {Scattering resonances and bound states for strongly interacting Rydberg  polaritons
},
	journal = {Physical Review A},
	volume = {90},
	year = {2014},
	month = {2014/11/3},
	abstract = {  We provide a theoretical framework describing slow-light polaritons
interacting via atomic Rydberg states. We use a diagrammatic method to
analytically derive the scattering properties of two polaritons. We identify
parameter regimes where polariton-polariton interactions are repulsive.
Furthermore, in the regime of attractive interactions, we identify multiple
two-polariton bound states, calculate their dispersion, and study the resulting
scattering resonances. Finally, the two-particle scattering properties allow us
to derive the effective low-energy many-body Hamiltonian. This theoretical
platform is applicable to ongoing experiments.
},
	doi = {10.1103/PhysRevA.90.053804},
	url = {http://arxiv.org/abs/1402.7333v1},
	author = {P. Bienias and S. Choi and O. Firstenberg and Mohammad F. Maghrebi and Michael Gullans and M. D. Lukin and Alexey V. Gorshkov and H. P. B{\"u}chler}
}
