Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 39: Quantum effects: Light scattering and propagation

Q 39.7: Vortrag

Mittwoch, 20. März 2013, 15:30–15:45, F 342

Statistical Properties of Photons in the Ultrastrong Coupling Regime — •Alessandro Ridolfo¹, Salvatore Savasta², and Michael J. Hartmann¹ — ¹Physik Department, Technische Universität München, James-Franck-Strasse, 85748 Garching, Germany — ²Dipartimento di Fisica e Scienze della Terra, Universitá di Messina, Viale F. Stagno d‘Alcontres 31, 98166 Messina, Italy

We present calculations for photon coincidence counting statistics in the ultrastrong coupling regime, where the strength of the interaction between an emitter and the cavity photons becomes comparable to the transition frequency of the emitter or the resonance frequency of the cavity mode. In such a regime of interaction, the usual normal order correlation functions fail to describe the output photon statistics. Exploiting the correct input-output relations within a suitable Master Equation approach, we are able to propose correlation functions that are valid for arbitrary degrees of light-matter interaction. In particular, here we focus on the photon blockade effect [1] and the emission of non-classical light from thermal systems [2], whose standard scenario is significantly modified for ultrastrong coupling.

[1] A. Ridolfo, M. Leib, S. Savasta, and M.J. Hartmann, Phys. Rev. Lett. 109, 193602 (2012)

[2] A. Ridolfo, S. Savasta, and M.J. Hartmann, arXiv:1212.1280 (2012)