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 -