TY - JOUR T1 - Steady-state superradiance with Rydberg polaritons JF - arXiv:1611.00797 Y1 - 2016 A1 - Zhe-Xuan Gong A1 - Minghui Xu A1 - Michael Foss-Feig A1 - James K. Thompson A1 - Ana Maria Rey A1 - Murray Holland A1 - Alexey V. Gorshkov AB -

A steady-state superradiant laser can be used to generate ultranarrow-linewidth light, and thus has important applications in the fields of quantum information and precision metrology. However, the light produced by such a laser is still essentially classical. Here, we show that the introduction of a Rydberg medium into a cavity containing atoms with a narrow optical transition can lead to the steady-state superradiant emission of ultranarrow-linewidth nonclassical light. The cavity nonlinearity induced by the Rydberg medium strongly modifies the superradiance threshold, and leads to a Mollow triplet in the cavity output spectrumthis behavior can be understood as an unusual analogue of resonance fluorescence. The cavity output spectrum has an extremely sharp central peak, with a linewidth that can be far narrower than that of a classical superradiant laser. This unprecedented spectral sharpness, together with the nonclassical nature of the light, could lead to new applications in which spectrally pure quantum light is desired.

UR - https://arxiv.org/abs/1611.00797 ER -