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

Files

Johnson_224864.pdf(3.92 MB)

Date

2012

Authors

Johnson, Tomi H.

Bruderer, Martin

Cai, Y.

Clark, Stephen R.

Bao, Weizhu

Jaksch, Dieter

Publication type

Journal article

Published in

EPL (Europhysics Letters) ; 98 (2012), 2. - 26001. - ISSN 0295-5075. - eISSN 1286-4854

Abstract

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.

Subject (DDC)

530 Physics

Cite This

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). 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}
}

RDF

<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/22486">
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/22486/2/Johnson_224864.pdf"/>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/22486/2/Johnson_224864.pdf"/>
    <dc:contributor>Johnson, Tomi H.</dc:contributor>
    <dcterms:title>Breathing oscillations of a trapped impurity in a Bose gas</dcterms:title>
    <dc:creator>Bao, Weizhu</dc:creator>
    <dc:contributor>Cai, Y.</dc:contributor>
    <dc:creator>Cai, Y.</dc:creator>
    <dc:creator>Bruderer, Martin</dc:creator>
    <dcterms:abstract xml:lang="eng">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.</dcterms:abstract>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-03-18T16:18:23Z</dcterms:available>
    <dcterms:bibliographicCitation>epl : a letters journal exploring the frontiers of physics ; 98 (2012). - 26001</dcterms:bibliographicCitation>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:language>eng</dc:language>
    <dc:contributor>Clark, Stephen R.</dc:contributor>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dcterms:issued>2012</dcterms:issued>
    <dc:contributor>Jaksch, Dieter</dc:contributor>
    <dc:creator>Jaksch, Dieter</dc:creator>
    <dc:rights>terms-of-use</dc:rights>
    <dc:contributor>Bruderer, Martin</dc:contributor>
    <dc:creator>Johnson, Tomi H.</dc:creator>
    <dc:contributor>Bao, Weizhu</dc:contributor>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Clark, Stephen R.</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/22486"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-03-18T16:18:23Z</dc:date>
  </rdf:Description>
</rdf:RDF>