Breathing oscillations of a trapped impurity in a Bose gas

Johnson, Tomi H.; Bruderer, Martin; Cai, Y.; Clark, Stephen R.; Bao, Weizhu; Jaksch, Dieter

Breathing oscillations of a trapped impurity in a Bose gas

Dateien

Johnson_224864.pdfGröße: 3.92 MBDownloads: 241

Datum

2012

Autor:innen

Johnson, Tomi H.

Bruderer, Martin

Cai, Y.

Clark, Stephen R.

Bao, Weizhu

Jaksch, Dieter

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

EPL (Europhysics Letters). 2012, 98(2), 26001. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/98/26001

Zusammenfassung

Motivated by a recent experiment (Catani J. et al., Phys. Rev. A, 85 (2012) 023623) we study breathing oscillations in the width of a harmonically trapped impurity interacting with a separately trapped Bose gas. We provide an intuitive physical picture of such dynamics at zero temperature, using a time-dependent variational approach. The amplitudes of breathing oscillations are suppressed by self-trapping, due to interactions with the Bose gas. Further, exciting phonons in the Bose gas leads to damped oscillations and non-Markovian dynamics of the width of the impurity, the degree of which can be engineered through controllable parameters. Our results, supported by simulations, reproduce the main features of the dynamics observed by Catani et al. despite the temperature of that experiment. Moreover, we predict novel effects at lower temperatures due to self-trapping and the inhomogeneity of the trapped Bose gas.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

JOHNSON, Tomi H., Martin BRUDERER, Y. CAI, Stephen R. CLARK, Weizhu BAO, Dieter JAKSCH, 2012. Breathing oscillations of a trapped impurity in a Bose gas. In: EPL (Europhysics Letters). 2012, 98(2), 26001. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/98/26001

BibTex

@article{Johnson2012Breat-22486,
  year={2012},
  doi={10.1209/0295-5075/98/26001},
  title={Breathing oscillations of a trapped impurity in a Bose gas},
  number={2},
  volume={98},
  issn={0295-5075},
  journal={EPL (Europhysics Letters)},
  author={Johnson, Tomi H. and Bruderer, Martin and Cai, Y. and Clark, Stephen R. and Bao, Weizhu and Jaksch, Dieter},
  note={Article Number: 26001}
}

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