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arXiv · 1706.10021

Subpicosecond $X$ rotations of atomic clock states

Yunheung Song·Han-gyeol Lee·Hyosub Kim·Hanlae Jo·Jaewook Ahn
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Abstract

We demonstrate subpicosecond-time-scale population transfer between the pair of hyperfine ground states of atomic rubidium using a single laser-pulse. Our scheme utilizes the geometric and dynamic phases induced during Rabi oscillation through the fine-structure excited state in order to construct an $X$ rotation gate for the hyperfine-state qubit system. Experiment performed with a femtosecond laser and cold rubidium atoms, in a magneto-optical trap, shows over 98\% maximal population transfer between the clock states.

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Yunheung Song, Han-gyeol Lee, Hyosub Kim, Hanlae Jo, Jaewook Ahn. 2017-06-30. Subpicosecond $X$ rotations of atomic clock states. https://doi.org/10.1103/physreva.97.052322

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