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arXiv · 1705.07923

Cavity-induced anti-correlated photon emission rates of a single ion

Hiroki Takahashi·Ezra Kassa·Costas Christoforou·Matthias Keller
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Abstract

We report on the alteration of photon emission properties of a single trapped ion coupled to a high finesse optical fiber cavity. We show that the vacuum field of the cavity can simultaneously affect the emissions in both the infrared (IR) and ultraviolet (UV) branches of the $Λ-$type level system of $^{40}\mathrm{Ca}^+$ despite the cavity coupling only to the IR transition. The cavity induces strong emission in the IR transition through the Purcell effect resulting in a simultaneous suppression of the UV fluorescence. The measured suppression of this fluorescence is as large as 66% compared with the case without the cavity. Through analysis of the measurement results, we have obtained an ion-cavity coupling of $\bar{g}_0 = 2π\cdot (5.3 \pm 0.1)$ MHz, the largest ever reported so far for a single ion in the IR domain.

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Hiroki Takahashi, Ezra Kassa, Costas Christoforou, Matthias Keller. 2017-05-22. Cavity-induced anti-correlated photon emission rates of a single ion. https://doi.org/10.1103/physreva.96.023824

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