Regensburg 2010 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 8: Quantum Dynamics, Decoherence, and Quantum Information I

DY 8.10: Talk

Tuesday, March 23, 2010, 12:15–12:30, H38

Optimal coherent control of noisy and open quantum systems — •Rebecca Schmidt, Joachim Ankerhold, and Jürgen T. Stockburger — Universität Ulm, Institut für Theoretische Physik, 89069 Ulm

The coherent optimal control of quantum dynamics has become an important design paradigm in modern tailored-matter applications such as quantum information processing and ultracold atoms in addition to its established use in chemical physics. We extend Krotov’s formulation of optimal control theory to noisy and open quantum systems, using an exact stochastic model for the quantum fluctuations of reservoir modes [1]. As a non-trivial test model we demonstrate optimal control of the harmonic oscillator under the control of simultaneous linear and parametric driving fields. As a concrete result, we find the potential of cooling translational motion without reference to internal degrees of freedom.

[1] Stockburger, J.T. and Grabert, H., Phys. Rev. Lett. 88, 170407 (2002)