Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 23: Poster 2: Intersectional Session

Q 23.7: Poster

Tuesday, March 15, 2011, 18:00–21:00, P1

Designing Ideal Hamiltonian Qubit Dynamics by Dynamical Recoupling — •Holger Frydrych and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt, D-64289 Darmstadt

Dynamical recoupling is a powerful method for suppressing unwanted parts of an active Hamiltonian on a qubit network, provided one is able to control all relevant qubits appropriately. A general construction principle is presented for dynamical recoupling schemes which are capable of transforming a given qubit Hamiltonian into a desired ideal form. The necessary and sufficient conditions which have to be fulfilled by the Hamiltonian are discussed.

As an example it is demonstrated how a particular perfect-state-transfer Hamiltonian [1][2] can be designed by a dynamical recoupling scheme in a linear qubit chain governed by nearest-neighbour interactions.

References:

[1] G. M. Nikolopoulos et al. Eur. Phys. Lett. 65, 297 (2004)

[2] M. Christandl et al. Phys. Rev. Lett. 92, 187902 (2004)