Date: Friday 20th January, 2006

Who: Jason Ralph

Seminar type: Research Seminar

Time: 12 Midday

Where: Interaction Room

Abstract:
We discuss the application of classical guidance laws to the problem of quantum control. Classically, guidance is a distinct branch of control theory that allows a user to specify an end point, rather than a full trajectory. It produces control commands that are robust, have a small bandwidth and are relatively easy to implement. We demonstrate how a classical guidance law (proportional navigation) can be adapted to the problem of state preparation in a model solid state qubit (a superconducting island or Cooper pair box). In addition, we consider the use of this guidance law with weak continuous measurement models and Jacbos’ rapid purification protocol to form a closed-loop quantum control system.