TY  - JOUR
A1  - Glück, Markus
A1  - Kolovsky, Andrey R.
A1  - Korsch, Hans Jürgen
T1  - Fractal stabilization of Wannier-Stark resonances
N2  - The quasienergy spectrum of a Bloch electron affected by dc-ac fields is known to have a fractal structure as function of the so-called electric matching ratio, which is the ratio of the ac field frequency and the Bloch frequency. This paper studies a manifestation of the fractal nature of the spectrum in the system "atom in a standing laser wave", which is a quantum optical realization of a Bloch electron. It is shown that for an appropriate choice of the system parameters the atomic survival probability (a quantity measured in laboratory experiments) also develops a fractal structure as a function of the electric matching ratio. Numerical simulations under classically chaotic scattering conditions show good agreement with theoretical predictions based on random matrix theory.
KW  - Quantum mechanics
KW  - Wannier-Stark systems
KW  - resonances
KW  - lifetimes
KW  - fractals
Y1  - 2000
UR  - https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/1062
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:386-kluedo-10112
ER  -