Dresden 2011 – scientific programme

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SYRP: Intersectional Symposium The Concept of Reality in Physics

SYRP 2: The Concept of Reality in Physics II

SYRP 2.4: Invited Talk

Wednesday, March 16, 2011, 18:00–18:30, HSZ 01

Obtaining Information about and Controlling Quantum Particles: Quantum Engineering — •Dieter Meschede — Institut für Angewandte Physik, Universität Bonn, Germany

Beginning with the observation of a single trapped ion in 1978, single particles have been widely used to experimentally illustrate concepts of quantum physics once considered purely abstract, e. g. quantum jumps. Since the 1990s, experimentalists have left the position of an observer and have begun to explore a new role as quantum engineers, exploiting the special properties of quantum dynamics and attempting to implement relevant processes in quantum information science. In this talk I will discuss the question how information about a simple atomic quantum system is obtained and can be used to steer it to a given state. Explicit examples include observation of atomic trajectories, quantum walks, and feedback schemes.