Hannover 2003 – wissenschaftliches Programm
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A: Atomphysik
A XVIII: HV XVIII
A XVIII.1: Hauptvortrag
Freitag, 28. März 2003, 11:30–12:00, F342
Atoms in half-cycle pulses: a laboratory for wavefunction tayloring, coherent control, and quantum chaos — •Joachim Burgdoerfer1, D. Arbo1, E. Persson1, S. Puschkarski1, C.O. Reinhold2, and S. Yoshida1 — 1Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/136, A-1040 Vienna, Austria — 2Physics Division, OakRidge National Laboratory, Oak Ridge, TN 37831, USA
The ultimate limit of a short pulse is a half-cycle pulse (HCP) subtending only a fraction of an "optical cycleNo-dq. Single pulses as well as trains of HCP’s are currently experimentally accessible in the GHz and THz regimes. In Rydberg atoms the duration of such HCP’s is short compared to the electronic orbital period representing an impulsive No-dqkickNo-dq. HCP sequences allow to shape and manipulate the time-dependent wavefunction in an (almost) arbitrary fashion. We illustrate the potential of this tool with a few examples: quantum localization in classical chaos, tayloring of wavepackets with low entropy, and probing the coordinate and momentum of a bound electron. Generation of HCP’s on an attosecond scale will be discussed.