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arXiv · 1611.00797

Steady-state superradiance with Rydberg polaritons

Zhe-Xuan Gong·Minghui Xu·Michael Foss-Feig·James K. Thompson·Ana Maria Rey·Murray Holland·Alexey V. Gorshkov
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Abstract

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 spectrum$-$this 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.

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Zhe-Xuan Gong, Minghui Xu, Michael Foss-Feig, James K. Thompson, Ana Maria Rey, Murray Holland, Alexey V. Gorshkov. 2016-11-02. Steady-state superradiance with Rydberg polaritons. https://arxiv.org/abs/1611.00797

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