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Dipole force free optical control and cooling of nanofiber trapped atoms

Østfeldt, Christoffer and Béguin, Jean-Baptiste S. and Pedersen, Freja T. and Polzik, Eugene S. and Müller, Jörg H. and Appel, Jürgen (2017) Dipole force free optical control and cooling of nanofiber trapped atoms. Optics Letters, 42 (21). pp. 4315-4318. ISSN 0146-9592. https://resolver.caltech.edu/CaltechAUTHORS:20171116-113344182

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Abstract

The evanescent field surrounding nanoscale optical waveguides offers an efficient interface between light and mesoscopic ensembles of neutral atoms. However, the thermal motion of trapped atoms, combined with the strong radial gradients of the guided light, leads to a time-modulated coupling between atoms and the light mode, thus giving rise to additional noise and motional dephasing of collective states. Here, we present a dipole force free scheme for coupling of the radial motional states, utilizing the strong intensity gradient of the guided mode and demonstrate all-optical coupling of the cesium hyperfine ground states and motional sideband transitions. We utilize this to prolong the trap lifetime of an atomic ensemble by Raman sideband cooling of the radial motion which, to the best of our knowledge, has not been demonstrated in nano-optical structures previously. This Letter points towards full and independent control of internal and external atomic degrees of freedom using guided light modes only.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1364/OL.42.004315DOIArticle
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-21-4315PublisherArticle
ORCID:
AuthorORCID
Østfeldt, Christoffer0000-0003-0557-345X
Béguin, Jean-Baptiste S.0000-0002-8314-3394
Pedersen, Freja T.0000-0001-8351-3474
Polzik, Eugene S.0000-0001-9859-6591
Müller, Jörg H.0000-0001-6984-0487
Appel, Jürgen0000-0003-1315-3439
Additional Information:© 2017 Optical Society of America. Received 11 August 2017; revised 16 September 2017; accepted 18 September 2017; posted 19 September 2017 (Doc. ID 304575); published 18 October 2017. Funding: H2020 European Research Council (ERC) (ERC-2011-ADG 20110209). The authors would like to thank S. Markussen for help with data acquisition.
Funders:
Funding AgencyGrant Number
European Research Council (ERC)ERC-2011-ADG 20110209
Issue or Number:21
Classification Code:OCIS codes: (020.3320) Laser cooling; (140.3320) Laser cooling; (020.6580) Stark effect; (270.1670) Coherent optical effects; (350.4238) Nanophotonics and photonic crystals
Record Number:CaltechAUTHORS:20171116-113344182
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20171116-113344182
Official Citation:Christoffer Østfeldt, Jean-Baptiste S. Béguin, Freja T. Pedersen, Eugene S. Polzik, Jörg H. Müller, and Jürgen Appel, "Dipole force free optical control and cooling of nanofiber trapped atoms," Opt. Lett. 42, 4315-4318 (2017)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83256
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Nov 2017 21:22
Last Modified:03 Oct 2019 19:04

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