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Coherent scattering of near-resonant light by a dense microscopic cold atomic cloud

Coherent scattering of near-resonant light by a dense microscopic cold atomic cloud
Coherent scattering of near-resonant light by a dense microscopic cold atomic cloud
We measure the coherent scattering of light by a cloud of laser-cooled atoms with a size comparable to the wavelength of light. By interfering a laser beam tuned near an atomic resonance with the field scattered by the atoms, we observe a resonance with a redshift, a broadening, and a saturation of the extinction for increasing atom numbers. We attribute these features to enhanced light-induced dipole-dipole interactions in a cold, dense atomic ensemble that result in a failure of standard predictions such as the “cooperative Lamb shift”. The description of the atomic cloud by a mean-field model based on the Lorentz-Lorenz formula that ignores scattering events where light is scattered recurrently by the same atom and by a microscopic discrete dipole model that incorporates these effects lead to progressively closer agreement with the observations, despite remaining differences
233601
Jennewein, S.
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Besbes, M.
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Schilder, N.J.
b6938ecd-af27-4752-b65c-3367f97300c6
Jenkins, S.D.
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Sauvan, C.
ca475b3c-47bd-4cf1-a6df-135443dd96ec
Ruostekoski, J.
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Greffet, J.-J.
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Sortais, Y.R.P.
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Browaeys, A.
db134975-b03c-4ee0-bb0f-5465c920f414
Jennewein, S.
50f4cb12-c653-48c6-af73-b8ba539ece45
Besbes, M.
c0f38adc-4fa2-4b09-a17d-c464bc817e48
Schilder, N.J.
b6938ecd-af27-4752-b65c-3367f97300c6
Jenkins, S.D.
65d861fb-b85a-4927-805a-7c906fca26c6
Sauvan, C.
ca475b3c-47bd-4cf1-a6df-135443dd96ec
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Greffet, J.-J.
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Sortais, Y.R.P.
6893a516-e600-43fc-80ab-7f7c7710275b
Browaeys, A.
db134975-b03c-4ee0-bb0f-5465c920f414

Jennewein, S., Besbes, M., Schilder, N.J., Jenkins, S.D., Sauvan, C., Ruostekoski, J., Greffet, J.-J., Sortais, Y.R.P. and Browaeys, A. (2016) Coherent scattering of near-resonant light by a dense microscopic cold atomic cloud. Physical Review Letters, 116 (23), 233601. (doi:10.1103/PhysRevLett.116.233601).

Record type: Article

Abstract

We measure the coherent scattering of light by a cloud of laser-cooled atoms with a size comparable to the wavelength of light. By interfering a laser beam tuned near an atomic resonance with the field scattered by the atoms, we observe a resonance with a redshift, a broadening, and a saturation of the extinction for increasing atom numbers. We attribute these features to enhanced light-induced dipole-dipole interactions in a cold, dense atomic ensemble that result in a failure of standard predictions such as the “cooperative Lamb shift”. The description of the atomic cloud by a mean-field model based on the Lorentz-Lorenz formula that ignores scattering events where light is scattered recurrently by the same atom and by a microscopic discrete dipole model that incorporates these effects lead to progressively closer agreement with the observations, despite remaining differences

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PRL_Coherent_response_resoumise_postfinal.pdf - Accepted Manuscript
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PhysRevLett.116.233601.pdf - Version of Record
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PRL_Coherent_response_resoumise_vfinal_SM.pdf - Other
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More information

Accepted/In Press date: 16 May 2016
e-pub ahead of print date: 8 June 2016
Additional Information: Funded by EPSRC: Quantum Technology Hub for Sensors and Metrology (EP/M013294/1)
Organisations: Applied Mathematics

Identifiers

Local EPrints ID: 396620
URI: http://eprints.soton.ac.uk/id/eprint/396620
PURE UUID: 879f771e-7e82-4416-9d08-d2a149f727e5

Catalogue record

Date deposited: 09 Jun 2016 12:05
Last modified: 25 Nov 2021 22:08

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Contributors

Author: S. Jennewein
Author: M. Besbes
Author: N.J. Schilder
Author: S.D. Jenkins
Author: C. Sauvan
Author: J. Ruostekoski
Author: J.-J. Greffet
Author: Y.R.P. Sortais
Author: A. Browaeys

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