Nanofiber-based optical trapping of cold neutral atoms

We present experimental techniques and results related to the optimization and characterization of our nanofiber-based atom trap [Vetsch et al., Phys. Rev. Lett. 104, 203603 (2010)]. The atoms are confined in an optical lattice which is created using a two-color evanescent field surrounding the opti...

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Published inarXiv.org
Main Authors Vetsch, Eugen, Dawkins, Samuel T, Mitsch, Rudolf, Reitz, Daniel, Schneeweiss, Philipp, Rauschenbeutel, Arno
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 23.10.2012
Subjects
Atomic properties
Cold traps
Nanofibers
Neutral atoms
Optical lattices
Optical trapping
Optimization
Physics - Atomic Physics
Physics - Quantum Physics
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Summary:We present experimental techniques and results related to the optimization and characterization of our nanofiber-based atom trap [Vetsch et al., Phys. Rev. Lett. 104, 203603 (2010)]. The atoms are confined in an optical lattice which is created using a two-color evanescent field surrounding the optical nanofiber. For this purpose, the polarization state of the trapping light fields has to be properly adjusted. We demonstrate that this can be accomplished by analyzing the light scattered by the nanofiber. Furthermore, we show that loading the nanofiber trap from a magneto-optical trap leads to sub-Doppler temperatures of the trapped atomic ensemble and yields a sub-Poissonian distribution of the number of trapped atoms per trapping site.
ISSN:2331-8422
DOI:10.48550/arxiv.1202.1494