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Resolved-sideband laser cooling in a Penning trap

Abstract:
We report the laser cooling of a single 40Caþ ion in a Penning trap to the motional ground state in one dimension. Cooling is performed in the strong binding limit on the 729-nm electric quadrupole S1=2↔D5=2 transition, broadened by a quench laser coupling the D5=2 and P3=2 levels. We find the final ground-state occupation to be 98(1)%. We measure the heating rate of the trap to be very low with _ n¯ ≈ 0.3ð2Þ s−1 for trap frequencies from 150–400 kHz, consistent with the large ion-electrode distance.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.116.143002

Authors


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Institution:
University of Oxford
Division:
MPLS
Role:
Author
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Name:
European Commission
Grant:
249958
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Name:
Engineering and Physical Sciences Research Council
Grant:
EP/D068509/1
More from this funder
Name:
European Cooperation in Science and Technology
Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
116
Issue:
14
Article number:
143002
Publication date:
2016-04-06
Acceptance date:
2016-04-06
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pubs id:
pubs:844240
UUID:
uuid:f8798b00-64e7-42ae-b7bb-e045b73c7de5
Local pid:
pubs:844240
Source identifiers:
844240
Deposit date:
2018-04-25

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