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Measuring ion oscillations at the quantum level with fluorescence light

Abstract:
We demonstrate an optical method for detecting the mechanical oscillations of an atom with single-phonon sensitivity. The measurement signal results from the interference between the light scattered by a trapped atomic ion and that of its mirror image. We detect the oscillations of the atom in the Doppler cooling limit and reconstruct average trajectories in phase space. We demonstrate single-phonon sensitivity near the ground state of motion after electronically induced transparency cooling. These results could be applied for motion detection of other light scatterers of fundamental interest, such as trapped nanoparticles.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevlett.127.063603

Authors


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Role:
Author
ORCID:
0000-0003-3068-0425
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
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Role:
Author
ORCID:
0000-0001-6061-5566


Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
127
Issue:
6
Article number:
63603
Publication date:
2021-08-04
Acceptance date:
2021-05-17
DOI:
EISSN:
1079-7114
ISSN:
0031-9007


Language:
English
Keywords:
Pubs id:
1233134
Local pid:
pubs:1233134
Deposit date:
2022-01-20

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