Regensburg 2013 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 58: Poster Session Transport & Matter at Low Temperature
TT 58.33: Poster
Donnerstag, 14. März 2013, 15:00–19:00, Poster D
Solving non-Markovian master equations for N-Qubit-systems — •Christian Karlewski1, Michael Marthaler2, and Gerd Schön2 — 1Fakultät für Physik, Universität Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany — 2Institut für theoretische Festkörperphysik, Karlsruher Institute for Technology, D-76128 Karlsruhe, Germany
We solve non-Markovian master-equations of N-Qubit systems with Born-approximation using Fourier-transformation. With the full solution of the reduced density matrix of the Qubit-system we analyze different noise-spectra and the resulting dynamics. Decoherence and the appearance of dark states can be seen. One special system we have a closer look at is the one-excitation model with one of the N-Qubits in an excited state. By the use of the observable that measures the population of all other qubits and some constraints to the system it is possible to reduce the dynamics of this observable to three ODE.