Mollow Triplet under Incoherent Pumping

Bose-Einstein condensation of magnons under incoherent pumping.

Bose-Einstein condensation in a gas of magnons pumped by an incoherent pumping source is experimentally studied at room temperature. We demonstrate that the condensation can be achieved in a gas of bosons under conditions of incoherent pumping. The critical transition point is shown to be almost independent of the frequency spectrum of the pumping source and is solely determined by the density ...

Resonance fluorescence from semiconductor quantum dots: beyond the Mollow triplet.

We show that the resonance fluorescence spectrum of a quantum dot excited by a strong optical pulse contains multiple peaks beyond those of the Mollow triplet. We show that as the area of the optical pulse is increased, new side peaks split off the central peak and shift in frequency. A simple analytical theory has been derived, which quantitatively accounts for the appearance and position of t...

Optical pumping via incoherent Raman transitions

An optical pumping scheme is presented that uses incoherent Raman transitions to prepare a trapped cesium atom in a specific Zeeman state within the 6S1/2, F=3 hyperfine manifold. An important advantage of this scheme over existing optical pumping schemes is that the atom can be prepared in any of the F=3 Zeeman states. We describe an experimental implementation of the scheme and show that a fr...

Anticrossing in the PL spectrum of light-matter coupling under incoherent continuous pumping

We compare the observed splitting in the PL spectrum of a strongly coupled light-matter system, with the splitting of its dressed modes. In the presence of non-negligible decoherence, the two may differ considerably. Whereas the dressed mode splitting has a simple expression, the observed splitting has no general analytical expression in terms of radicals of the system parameters.

Observation of resonance fluorescence and the Mollow triplet from a coherently driven site-controlled quantum dot