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标题：Enhanced ion–cavity coupling through cavity cooling in the strong coupling regime
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作者：Costas Christoforou ; Corentin Pignot ; Ezra Kassa 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2020
卷号：10
期号：1
页码：1-7
DOI：10.1038/s41598-020-72796-9
出版社：Springer Nature
摘要：Incorporating optical cavities in ion traps is becoming increasingly important in the development of photonic quantum networks. However, the presence of the cavity can hamper efficient laser cooling of ions because of geometric constraints that the cavity imposes and an unfavourable Purcell effect that can modify the cooling dynamics substantially. On the other hand the coupling of the ion to the cavity can also be exploited to provide a mechanism to efficiently cool the ion. In this paper we demonstrate experimentally how cavity cooling can be implemented to improve the localisation of the ion and thus its coupling to the cavity. By using cavity cooling we obtain an enhanced ion–cavity coupling of $$2\pi \times (16.7\pm 0.1)$$ MHz, compared with $$2\pi \times (15.2\pm 0.1)$$ MHz when using only Doppler cooling.
其他摘要：Abstract Incorporating optical cavities in ion traps is becoming increasingly important in the development of photonic quantum networks. However, the presence of the cavity can hamper efficient laser cooling of ions because of geometric constraints that the cavity imposes and an unfavourable Purcell effect that can modify the cooling dynamics substantially. On the other hand the coupling of the ion to the cavity can also be exploited to provide a mechanism to efficiently cool the ion. In this paper we demonstrate experimentally how cavity cooling can be implemented to improve the localisation of the ion and thus its coupling to the cavity. By using cavity cooling we obtain an enhanced ion–cavity coupling of $$2\pi \times (16.7\pm 0.1)$$ 2 π × ( 16.7 ± 0.1 ) MHz, compared with $$2\pi \times (15.2\pm 0.1)$$ 2 π × ( 15.2 ± 0.1 ) MHz when using only Doppler cooling.