München 2004 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 11: Fallen und Kühlung
Q 11.2: Vortrag
Montag, 22. März 2004, 16:45–17:00, HS 224
Robust and Efficient Addressing of Single Atoms Using Adiabatic Passages — •Yevhen Miroshnychenko, Dominik Schrader, Mkrtych Khudaverdyan, Igor Dotsenko, Stefan Kuhr, Wolfgang Alt, Arno Rauschenbeutel, and Dieter Meschede — Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, Bonn, 53115
We have used the method of adiabatic passages to address single neutral Cs atoms stored in an optical standing wave dipole trap [1]. The main advantage of the method of adiabatic passages for the purpose of full population transfer in a two level system, in contrast to resonant pi-pulses, is its robustness with respect to fluctuations of the amplitude and the frequency of an external field, and of the resonance frequency of an atom.
We apply a microwave sweep to the outermost mF magnetic sublevels of the two hyperfine ground states of Cs. We use a magnetic field gradient along the dipole trap axis to induce position dependent Zeeman shifts of hyperfine levels of different atoms in the dipole trap. Setting the central frequency of the microwave pulse to the Zeeman resonance frequency of a selected atom we robustly and with near 100% transfer the population of this atom only out of the string of atoms in the trap. We discuss results of the numerical simulation and the corresponding experiments [2].
[1] S. Kuhr et. al., Science 293, 278 (2001)
[2] M. Khudaverdyan et. al., in preparation