Journal article
Thermometry of ultracold atoms via nonequilibrium work distributions
- Abstract:
- Estimating the temperature of a cold quantum system is difficult. Usually, one measures a wellunderstood thermal state and uses that prior knowledge to infer its temperature. In contrast, we introduce a method of thermometry that assumes minimal knowledge of the state of a system and is potentially non-destructive. Our method uses a universal temperature-dependence of the quench dynamics of an initially thermal system coupled to a qubit probe that follows from the Tasaki-Crooks theorem for non-equilibrium work distributions. We provide examples for a cold-atom system, in which our thermometry protocol may retain accuracy and precision at subnanokelvin temperatures.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Accepted manuscript, pdf, 1.1MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevA.93.053619
Authors
+ Engineering and Physical Sciences Research Council
More from this funder
- Funding agency for:
- Mitchison, M
- Grant:
- Controlled Quantum Dynamics CDT
- EP/K038311/1; EP/J010529/1
+ National Research Foundation, Singapore
More from this funder
- Funding agency for:
- Johnson, T
- Jaksch, D
- Publisher:
- American Physical Society
- Journal:
- Physical Review A More from this journal
- Volume:
- 93
- Issue:
- 5
- Article number:
- 053619
- Publication date:
- 2016-01-01
- Acceptance date:
- 2016-04-19
- DOI:
- EISSN:
-
1094-1622
- ISSN:
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1050-2947
- Pubs id:
-
pubs:619325
- UUID:
-
uuid:7e338a18-617a-47bb-9b4d-6ec6e79192c9
- Local pid:
-
pubs:619325
- Source identifiers:
-
619325
- Deposit date:
-
2016-05-04
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2016
- Notes:
- Copyright © 2016 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: http://dx.doi.org/10.1103/PhysRevA.93.053619
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