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arXiv · 2212.01994

A hybrid quantum photonic interface for $^{171}$Yb solid-state qubits

Chun-Ju Wu·Daniel Riedel·Andrei Ruskuc·Ding Zhong·Hyounghan Kwon·Andrei Faraon
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Abstract

$^{171}$Yb$^{3+}$ in YVO$_4$ is a promising candidate for building quantum networks with good optical addressability, excellent spin properties and a secondary nuclear-spin quantum register. However, the associated long optical lifetime necessitates coupling to optical resonators for faster emission of single photons and to facilitate control of single $^{171}$Yb ions. Previously, single $^{171}$Yb ions were addressed by coupling them to monolithic photonic crystal cavities fabricated via lengthy focused ion beam milling. Here, we design and fabricate a hybrid platform based on ions coupled to the evanescently decaying field of a GaAs photonic crystal cavity. We experimentally detect and demonstrate coherent optical control of single $^{171}$Yb ions. For the most strongly coupled ions, we find a 64 fold reduction in lifetime. The results show a promising route towards a quantum network with $^{171}$Yb:YVO$_4$ using a highly scalable platform.

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Chun-Ju Wu, Daniel Riedel, Andrei Ruskuc, Ding Zhong, Hyounghan Kwon, Andrei Faraon. 2022-12-05. A hybrid quantum photonic interface for $^{171}$Yb solid-state qubits. https://arxiv.org/abs/2212.01994

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