Dresden 2014 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 12: Focus Session: Feedback Control of Nonlinear Soft and Hard Matter Systems (original: DY, joined by CPP)

CPP 12.6: Talk

Monday, March 31, 2014, 17:00–17:15, HÜL 186

Time-delayed control of (un)stable steady states in open quantum systems — •Philipp Strasberg and Tobias Brandes — Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany

We consider the quantum version of classical time-delayed feedback to control (un)stable steady states of a quantum system. The system is then described by a (non-linear) stochastic master equation, which can be mapped to a set of time-delayed stochastic differential equations for the means and a set of a non-linear equations for the covariances. At steady state, the equations for the means are on average the same as for the classical case with a stochastic part coming purely from the quantum measurement and feedback.