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

Author(s): D. O'Shea, Ch. Junge, M. Pöllinger, A. Vogler, A. Rauschenbeutel

Journal: Applied Physics B

Volume: 105

Page(s): 129-148

Year: 2011

DOI Number: 10.1007/s00340-011-4714-x

Link: Link to publication


We review our recent work on tunable, ultra-high quality factor whispering-gallery-mode bottle microresonators and highlight their applications in non-linear optics and in quantum optics experiments. Our resonators combine ultra-high quality factors of up to Q=3.6×108, a small mode volume, and near-lossless fiber coupling, with a simple and customizable mode structure enabling full tunability. We study, theoretically and experimentally, non-linear 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 toward strong coupling of single rubidium atoms to an ultra-high Q mode of an actively stabilized bottle microresonator.


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