Many-body dynamics of Rydberg excitation using the $Ω$-expansion

Details Many-body dynamics of Rydberg excitation using the $Ω$-expansion Many-body dynamics of Rydberg excitation using the $Ω$-expansion

2008-01-15

arxiv.org/abs/0801.2396v1

Physics

Quantum Physics

9 pages, 3 figures, 1 table

Scientific paper

We investigate the excitation dynamics of Rydberg atoms in ultracold atomic samples by expanding the excitation probability and the correlation function between excited atoms in powers of the isolated atom Rabi frequency $\Omega$. In the Heisenberg picture, we give recurrence relations to calculate any order of the expansions, which ere expected to be well-behaved for arbitrarily strong interactions. For homogeneous large samples, we give the explicit form of the expansions, up to $\Omega^4$, averaged over all possible random spatial distributions of atoms, for the most important cases of excitation pulses and interactions.

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