Interferometric laser cooling of atomic rubidium
Interferometric laser cooling of atomic rubidium
We report the 1D cooling of Rb85 atoms using a velocity-dependent optical force based upon Ramsey matter-wave interferometry. Using stimulated Raman transitions between ground hyperfine states, 12 cycles of the interferometer sequence cool a freely moving atom cloud from 21 to 3???K. This pulsed analog of continuous-wave Doppler cooling is effective at temperatures down to the recoil limit; with augmentation pulses to increase the interferometer area, it should cool more quickly than conventional methods and be more suitable for species that lack a closed radiative transition.
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Dunning, Alexander
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Gregory, Rachel
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Bateman, James
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Himsworth, Matt
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Freegarde, Tim
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14 August 2015
Dunning, Alexander
0da350ff-2b5e-4e68-a526-2a1f812c4395
Gregory, Rachel
8a544eeb-87d2-496b-8d26-6ddfe4c10ead
Bateman, James
05b8f150-3d00-49f6-bf35-3d535b773b53
Himsworth, Matt
24e9b896-b4d3-40f7-8047-82a38efa4898
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Dunning, Alexander, Gregory, Rachel, Bateman, James, Himsworth, Matt and Freegarde, Tim
(2015)
Interferometric laser cooling of atomic rubidium.
Physical Review Letters, 115 (73004), .
(doi:10.1103/PhysRevLett.115.073004).
Abstract
We report the 1D cooling of Rb85 atoms using a velocity-dependent optical force based upon Ramsey matter-wave interferometry. Using stimulated Raman transitions between ground hyperfine states, 12 cycles of the interferometer sequence cool a freely moving atom cloud from 21 to 3???K. This pulsed analog of continuous-wave Doppler cooling is effective at temperatures down to the recoil limit; with augmentation pulses to increase the interferometer area, it should cool more quickly than conventional methods and be more suitable for species that lack a closed radiative transition.
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e-pub ahead of print date: 14 August 2015
Published date: 14 August 2015
Organisations:
Quantum, Light & Matter Group
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Local EPrints ID: 393594
URI: http://eprints.soton.ac.uk/id/eprint/393594
PURE UUID: 959bdbc2-5a40-4330-a87c-bbdbaeaf1a92
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Date deposited: 29 Apr 2016 08:45
Last modified: 15 Mar 2024 03:17
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Author:
Alexander Dunning
Author:
Rachel Gregory
Author:
James Bateman
Author:
Matt Himsworth
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