Force-assisted velocity selective coherent population trapping
We present a fully quantum analysis of velocity selective coherent population trapping (VSCPT) in two schemes for which there is a force which assists in the accumulation of atoms in the trapping state. In the first scheme, the F g=2 to F e=2 transition was studied where the existence of a semiclass...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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1995
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| _version_ | 1797067130646036480 |
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| author | Wu, H Hillenbrand, G Morigi, G Foot, C |
| author_facet | Wu, H Hillenbrand, G Morigi, G Foot, C |
| author_sort | Wu, H |
| collection | OXFORD |
| description | We present a fully quantum analysis of velocity selective coherent population trapping (VSCPT) in two schemes for which there is a force which assists in the accumulation of atoms in the trapping state. In the first scheme, the F g=2 to F e=2 transition was studied where the existence of a semiclassical polarization gradient force even for a pure sigma +- sigma - configuration has been demonstrated which gives cooling for blue detuning. We also verify that cooling may be obtained for the F=2 to 1 and F=3 to 2 transitions; our fully quantum mechanical calculations yield a result which is consistent with recent experimental results of Valentin et al. (1992) but differ from previous semiclassical calculations. Secondly, we discuss a scheme of force-assisted VSCPT which combines VSCPT on the F g=1 to F e=1 transition with the coupling to another transition for which a strong sub-Doppler cooling force is present. This scheme allows velocity selective coherent population trapping and the polarization-gradient force to work under optimum conditions simultaneously. We find that both of these two schemes lead to efficient cooling of atoms. © 1995 IOP Publishing Ltd. |
| first_indexed | 2024-03-06T21:51:56Z |
| format | Journal article |
| id | oxford-uuid:4b9311e6-b889-482c-acb2-d3550e3c98c5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:51:56Z |
| publishDate | 1995 |
| record_format | dspace |
| spelling | oxford-uuid:4b9311e6-b889-482c-acb2-d3550e3c98c52022-03-26T15:44:27ZForce-assisted velocity selective coherent population trappingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4b9311e6-b889-482c-acb2-d3550e3c98c5EnglishSymplectic Elements at Oxford1995Wu, HHillenbrand, GMorigi, GFoot, CWe present a fully quantum analysis of velocity selective coherent population trapping (VSCPT) in two schemes for which there is a force which assists in the accumulation of atoms in the trapping state. In the first scheme, the F g=2 to F e=2 transition was studied where the existence of a semiclassical polarization gradient force even for a pure sigma +- sigma - configuration has been demonstrated which gives cooling for blue detuning. We also verify that cooling may be obtained for the F=2 to 1 and F=3 to 2 transitions; our fully quantum mechanical calculations yield a result which is consistent with recent experimental results of Valentin et al. (1992) but differ from previous semiclassical calculations. Secondly, we discuss a scheme of force-assisted VSCPT which combines VSCPT on the F g=1 to F e=1 transition with the coupling to another transition for which a strong sub-Doppler cooling force is present. This scheme allows velocity selective coherent population trapping and the polarization-gradient force to work under optimum conditions simultaneously. We find that both of these two schemes lead to efficient cooling of atoms. © 1995 IOP Publishing Ltd. |
| spellingShingle | Wu, H Hillenbrand, G Morigi, G Foot, C Force-assisted velocity selective coherent population trapping |
| title | Force-assisted velocity selective coherent population trapping |
| title_full | Force-assisted velocity selective coherent population trapping |
| title_fullStr | Force-assisted velocity selective coherent population trapping |
| title_full_unstemmed | Force-assisted velocity selective coherent population trapping |
| title_short | Force-assisted velocity selective coherent population trapping |
| title_sort | force assisted velocity selective coherent population trapping |
| work_keys_str_mv | AT wuh forceassistedvelocityselectivecoherentpopulationtrapping AT hillenbrandg forceassistedvelocityselectivecoherentpopulationtrapping AT morigig forceassistedvelocityselectivecoherentpopulationtrapping AT footc forceassistedvelocityselectivecoherentpopulationtrapping |