Frankfurt 2006 – wissenschaftliches Programm

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A: Atomphysik

A 12: Atomare Systeme in externen Feldern I

A 12.5: Vortrag

Mittwoch, 15. März 2006, 15:15–15:30, H6

Ericson fluctuations in an open, deterministic quantum system: theory meets experiment — •Javier Madronero¹ and Andreas Buchleitner² — ¹Physik Department, Technische Universität München — ²Max-Plank-Institut für Physik komplexer Systeme, Dresden

We report on numerically exact quantum calculations on alkali Rydberg atoms in crossed magnetic and electric fields, above the ionization threshold in a regime of overlapping resonances. The calculated photoexcitation cross sections for rubidium Rydberg states are in quantitative agreement with recent experimental observations [1] and exhibit a clear transition towards the Ericson regime [2].

[1] G. Stania and H. Walther, Phys. Rev. Lett. 95, 194101 (2005)

[2] J. Madroñero and A. Buchleitner, preprint Phys. Rev. Lett.