Stuttgart 2012 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 9: Quanteneffekte: Interferenz und Korrelationen
Q 9.5: Talk
Monday, March 12, 2012, 15:00–15:15, V7.01
Lasing with one-emitter — •Fabrice P. Laussy1, Elena del Valle2, and Jonathan J. Finley1 — 1Walter Schottky Institut, München, Germany — 2Technische Universität München, Germany
We revisit the one-atom laser, where optical coherence grows thanks to a single emitter in strong-coupling with a cavity field. We identify a new regime where the emission of uncorrelated photons is retained even without stimulated emission. We provide the conditions for this and prove analytically that a field coherent to all orders is generated even for small and vanishing intensities, bringing a new light to thresholdless lasing. We analyse the crossover between this regime and the one established by stimulated emission and show that a universal transition--independent of the energy scales--occurs when going from the quantum to the classical regime, where the quantization picture breaks down, giving rise to a new type of Mollow triplet.
[1] Laussy, del Valle and Finley, arXiv:1106.0509.
[2] del Valle and Laussy, Phys. Rev. A, 84:043816, 2011.
[3] del Valle and Laussy, Phys. Rev. Lett., 105:233601, 2010.