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Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics II

Q 31.42: Poster

Dienstag, 24. März 2015, 17:00–19:00, C/Foyer

Multi-Mode Tavis-Cummings Model with Time-Delayed Feedback Control — •Wassilij Kopylov1, Tobias Brandes1, Milan Radonjić2, Antun Balaž3, and Axel Pelster41Institute for Theoretical Physics, Technische Univesität Berlin, Germany — 2Photonics Center, Institute of Physics Belgrade, University of Belgrade, Serbia — 3Scientific Computing Laboratory, Institute of Physics Belgrade, University of Belgrade, Serbia — 4Physics Department and Research Center OPTIMAS, Technische Universität Kaiserslautern, Germany

We study a multi-mode Tavis-Cummings model [1] which reveals a complex phase diagram with multiple stable stationary states at mean-field level. Adding a time-delayed Pyragas feedback control term [2,3] in the equations of motion allows to tune the stability of the stationary states and, thus, modifies the underlying phase diagram. In addition, we analyze in detail how an external heat bath for the atoms changes the system dynamics both without and with time-delayed feedback control.

[1] M. Tavis and F.W. Cummings, Phys. Rev. 170, 379 (1968)

[2] K. Pyragas, Phys. Lett. A 170, 421 (1992)

[3] W. Just, A. Pelster, M. Schanz, and E. Schöll, Phil. Trans. Roy. Soc. A 368, 303 (2010)

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DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg