Nanofiber-based high-Q microresonator for cryogenic applications

We demonstrate a cryo-compatible, fully fiber-integrated, alignment-free optical microresonator. The compatibility with low temperatures expands its possible applications to the wide field of solid-state quantum optics, where a cryogenic environment is often a requirement. At a temperature of 4.6 K...

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Veröffentlicht in:Optics express 2020-02, Vol.28 (3), p.3249-3257
Hauptverfasser: Hütner, Johanna, Hoinkes, Thomas, Becker, Martin, Rothhardt, Manfred, Rauschenbeutel, Arno, Skoff, Sarah M
Format: Artikel
Sprache:eng
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Zusammenfassung:We demonstrate a cryo-compatible, fully fiber-integrated, alignment-free optical microresonator. The compatibility with low temperatures expands its possible applications to the wide field of solid-state quantum optics, where a cryogenic environment is often a requirement. At a temperature of 4.6 K we obtain a quality factor of (9.9 ± 0.7) × 106. In conjunction with the small mode volume provided by the nanofiber, this cavity can be either used in the coherent dynamics or the fast cavity regime, where it can provide a Purcell factor of up to 15. Our resonator is therefore suitable for significantly enhancing the coupling between light and a large variety of different quantum emitters and due to its proven performance over a wide temperature range, also lends itself for the implementation of quantum hybrid systems.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.381286