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Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Quantum effects: QED I

Q 35.3: Vortrag

Donnerstag, 20. März 2014, 11:15–11:30, DO26 208

Route from spontaneous decay to complex multimode dynamics in cavity QED — •Dmitry Krimer1, Matthias Liertzer1, Stefan Rotter1, and Hakan E. Tureci21Institute for Theoretical Physics, Vienna University of Technology, A-1040, Vienna, Austria — 2Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA

We study the non-Markovian quantum dynamics of an emitter inside an open multimode cavity, focusing on the case where the emitter is resonant with high-frequency cavity modes [1]. Based on a Green's function technique suited for open photonic structures, we study the crossovers between three distinct regimes as the coupling strength is gradually increased: (i) overdamped decay with a time scale given by the Purcell modified decay rate, (ii) underdamped oscillations with a time scale given by the effective vacuum Rabi frequency, and (iii) pulsed revivals. The final multimode strong coupling regime (iii) gives rise to quantum revivals of the atomic inversion on a time scale associated with the cavity round-trip time. We show that the crucial parameter to capture the crossovers between these regimes is the nonlinear Lamb shift, accounted for exactly in our formalism.

[1] D.O. Krimer, M. Liertzer, S. Rotter, and H. E. Tureci, arXiv:1306.4787

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