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arXiv · 2507.02108

88Sr+ ion trap apparatus for generating 408 nm photons

Jianlong Lin·Mari Cieszynski·William Christopherson·Darman Khan·Lintao Li·Elizabeth Goldschmidt·Brian DeMarco
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Abstract

We describe a 88Sr+ ion trap apparatus with the capability to produce high-quality 408 nm photons aimed at distributed quantum computing and networking applications. This instrument confines ion chains using a surface electrode trap with a two-dimensional magneto-optical trap as an atomic source. Several laser systems spanning 400-1100 nm are used to achieve high fidelity state preparation and readout. Photons are produced via the decay of an exited state, which is accessed using a custom 408 nm laser system that produces 150 ps optical pulses using non-linear photonics. We demonstrate single photon production through a Hanbury Brown-Twiss measurement for one to six ions.

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Jianlong Lin, Mari Cieszynski, William Christopherson, Darman Khan, Lintao Li, Elizabeth Goldschmidt, Brian DeMarco. 2025-07-02. 88Sr+ ion trap apparatus for generating 408 nm photons. https://arxiv.org/abs/2507.02108

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