Coupling ultracold atoms to mechanical oscillators

D. Hunger; S. Camerer; M. Korppi; A. Jöckel; T.W. Hänsch; P. Treutlein

doi:10.1016/j.crhy.2011.04.015

Coupling ultracold atoms to mechanical oscillators
[Coupler des atomes ultrafroids avec des oscillateurs mécaniques]

D. Hunger ^1,² ; S. Camerer ^1,² ; M. Korppi ^1,^2,³ ; A. Jöckel ^1,^2,³ ; T.W. Hänsch ^1,² ; P. Treutlein ^1,^2,³

¹ Ludwig-Maximilians-Universität München, Schellingstr. 4, 80799 München, Germany
² Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
³ Departement Physik, Universität Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

Comptes Rendus. Physique, Volume 12 (2011) no. 9-10, pp. 871-887.

Résumé
Abstract

Dans cet article, nous discutons et comparons différentes méthodes pour réaliser une interface entre des atomes ultrafroids et des oscillateurs micro- ou nanomécaniques. Nous analysons dʼabord le couplage mécanique direct dʼun atome isolé à un oscillateur mécanique, et montrons que la grande différence de masse entre les deux systèmes impose une limite à la constante de couplage réalisable dans ce cas. Nous discutons ensuite plusieurs stratégies prometteuses en vue dʼaugmenter ce couplage : un renforcement collectif par lʼutilisation dʼun grand nombre dʼatomes dans un réseau optique, lʼutilisation de cavités optiques de grande finesse, et un couplage aux états atomiques internes. Nous discutons dans cet article à la fois les propositions théoriques et les premières mises en oeuvre expérimentales.

In this article we discuss and compare different ways to engineer an interface between ultracold atoms and micro- and nanomechanical oscillators. We start by analyzing a direct mechanical coupling of a single atom or ion to a mechanical oscillator and show that the very different masses of the two systems place a limit on the achievable coupling constant in this scheme. We then discuss several promising strategies for enhancing the coupling: collective enhancement by using a large number of atoms in an optical lattice in free space, coupling schemes based on high-finesse optical cavities, and coupling to atomic internal states. Throughout the manuscript we discuss both theoretical proposals and first experimental implementations.

Reçu le : 2010-11-22
Accepté le : 2011-04-29
Publié le : 2011-08-02

DOI : 10.1016/j.crhy.2011.04.015

Keywords: Ultracold atoms, Micro- and nanomechanical oscillators, Hybrid quantum systems, Cavity optomechanics, Bose–Einstein condensate, Ultracold ions
Mot clés : Atomes ultrafroids, Oscillateurs micro- ou nanomécaniques, Systèmes hybrides quantiques, Cavité optomécanique, Condensat de Bose–Einstein, Ions ultrafroids

Affiliations des auteurs :

D. Hunger ^{1, 2} ; S. Camerer ^{1, 2} ; M. Korppi ^{1, 2, 3} ; A. Jöckel ^{1, 2, 3} ; T.W. Hänsch ^{1, 2} ; P. Treutlein ^{1, 2, 3}

¹ Ludwig-Maximilians-Universität München, Schellingstr. 4, 80799 München, Germany
² Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
³ Departement Physik, Universität Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

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     author = {D. Hunger and S. Camerer and M. Korppi and A. J\"ockel and T.W. H\"ansch and P. Treutlein},
     title = {Coupling ultracold atoms to mechanical oscillators},
     journal = {Comptes Rendus. Physique},
     pages = {871--887},
     publisher = {Elsevier},
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     doi = {10.1016/j.crhy.2011.04.015},
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D. Hunger; S. Camerer; M. Korppi; A. Jöckel; T.W. Hänsch; P. Treutlein. Coupling ultracold atoms to mechanical oscillators. Comptes Rendus. Physique, Volume 12 (2011) no. 9-10, pp. 871-887. doi : 10.1016/j.crhy.2011.04.015. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2011.04.015/

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