Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster 2

Q 35.33: Poster

Mittwoch, 14. März 2012, 16:30–19:00, Poster.I+II

Designing Ideal Hamiltonian Interactions on Networks of Qudits by Dynamical Recoupling — •Holger Frydrych and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt, D-64289 Darmstadt

Dynamical recoupling is a method which uses local unitary control operations at fixed time intervals to modify the strength of selected Hamiltonian couplings in a quantum system. It can be applied to suppress errors or to implement desired Hamiltonian dynamics. We describe a method to find suitable control sequences on arbitrary qudit networks to transform an acting Hamiltonian into an arbitrary desired Hamiltonian to first order. The required control operations are the generalised spin operators applied to each qudit individually. The only restriction of this method is that any desired coupling must already be present in the acting Hamiltonian. An example of how to apply this method in practice is presented.

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