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Q: Fachverband Quantenoptik und Photonik
Q 21: Optomechanics I
Q 21.2: Vortrag
Montag, 5. März 2018, 16:30–16:45, K 0.023
Quantum State Retrodiction in Gaussian Systems — •Jonas Lammers1,2 and Klemens Hammerer1,2 — 1Institut für Theoretische Physik, Leibniz Universität Hannover — 2Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Hannover
Open quantum systems whose environment is observed evolve according to stochastic master and Schrödinger equations. These predict the system state conditioned on past observations. We address the problem of verification of conditionally prepared states through retrodiction, i.e., the estimation of a state lying in the past. We apply the method to Gaussian states in linear systems, and compute the backwards evolution of their first and second moments. In particular, we consider an optomechanical oscillator coupled to a thermal bath.