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 well-understood 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 nondestructive. 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 nonequilibrium work distributions. We provide examples for a cold-atom system, in which our thermometry protocol may retain accuracy and precision at subnano-Kelvin temperatures.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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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
- Publisher:
- American Physical Society
- Journal:
- Physical Review A More from this journal
- Volume:
- 93
- Issue:
- 5
- Article number:
- 053619
- Publication date:
- 2016-05-23
- DOI:
- EISSN:
-
2469-9934
- ISSN:
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2469-9926
- Pubs id:
-
pubs:666872
- UUID:
-
uuid:4cfa6eef-eda7-49fe-bdee-6161d8754273
- Local pid:
-
pubs:666872
- Source identifiers:
-
666872
- Deposit date:
-
2017-03-08
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: https://doi.org/10.1103/PhysRevA.93.053619
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