Spectral properties of finite laser-driven lattices of ultracold Rydberg atoms

Details Spectral properties of finite laser-driven lattices of ultracold Rydberg atoms Spectral properties of finite laser-driven lattices of ultracold Rydberg atoms

2010-12-17

arxiv.org/abs/1012.3810v2

J. Phys. B 44, 184009 (2011)

Physics

Atomic Physics

17 pages, 12 figures

Scientific paper

10.1088/0953-4075/44/18/184009

We investigate the spectral properties of a finite laser-driven lattice of ultracold Rydberg atoms exploiting the dipole blockade effect in the frozen Rydberg gas regime. Uniform one-dimensional lattices as well as lattices with variable spacings are considered. In the case of a weak laser coupling, we find a multitude of many-body Rydberg states with well-defined excitation properties which are adiabatically accessible starting from the ground state. A comprehensive analysis of the degeneracies of the spectrum as well as of the single and pair excitations numbers of the eigenstates is performed. In the strong laser regime, analytical solutions for the pseudo-fermionic eigenmodes are derived. Perturbative energy corrections for this approximative approach are provided.

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