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arXiv · 1105.0330

All-optical switching and strong coupling using tunable whispering-gallery-mode microresonators

D. O'Shea·C. Junge·M. Poellinger·A. Vogler·A. Rauschenbeutel
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Abstract

We review our recent work on tunable, ultrahigh quality factor whispering-gallery-mode bottle microresonators and highlight their applications in nonlinear optics and in quantum optics experiments. Our resonators combine ultra-high quality factors of up to Q = 3.6 \times 10^8, a small mode volume, and near-lossless fiber coupling, with a simple and customizable mode structure enabling full tunability. We study, theoretically and experimentally, nonlinear all-optical switching via the Kerr effect when the resonator is operated in an add-drop configuration. This allows us to optically route a single-wavelength cw optical signal between two fiber ports with high efficiency. Finally, we report on progress towards strong coupling of single rubidium atoms to an ultra-high Q mode of an actively stabilized bottle microresonator.

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D. O'Shea, C. Junge, M. Poellinger, A. Vogler, A. Rauschenbeutel. 2011-05-02. All-optical switching and strong coupling using tunable whispering-gallery-mode microresonators. https://doi.org/10.1007/s00340-011-4714-x

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