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A11: Feedback control for quantum information processing

Principal investigator:

Prof. Dr. Felix von Oppen

 

Project summary:

Maintaining coherence in the face of interactions with the environment is essential for reliably manipulat-
ing quantum states and thus quantum information processing. One prominent strategy towards this goal
relies on the measurement of error syndromes and subsequent active quantum error correction. Such
error correcting codes typically rely on projective syndrome readout. In practice, such projective measure-
ments may be too difficult or too time consuming. In this project, we explore feedback-based strategies
towards this goal which use weak rather than projective measurements, with a focus on topological
quantum computation and the underlying adiabatic quantum dynamics.