Quantum-limited metrology and Bose-Einstein condensates

Boixo, Sergio, Datta, Animesh, Davis, Matthew J., Shaji, Anil, Tacla, Alexandre B. and Caves, Carlton M. (2009) Quantum-limited metrology and Bose-Einstein condensates. Physical Review A, 80 3: 032103-1-032103-16. doi:10.1103/PhysRevA.80.032103

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Author Boixo, Sergio
Datta, Animesh
Davis, Matthew J.
Shaji, Anil
Tacla, Alexandre B.
Caves, Carlton M.
Title Quantum-limited metrology and Bose-Einstein condensates
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2009-09-04
Year available 2009
Sub-type Article (original research)
DOI 10.1103/PhysRevA.80.032103
Open Access Status File (Publisher version)
Volume 80
Issue 3
Start page 032103-1
End page 032103-16
Total pages 16
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2010
Language eng
Abstract We discuss a quantum-metrology protocol designed to estimate a physical parameter in a Bose-Einstein condensate of N atoms, and we show that the measurement uncertainty can decrease faster than 1/N. The 1/N scaling is usually thought to be the best possible in any measurement scheme. From the perspective of quantum information theory, we outline the main idea that leads to a measurement uncertainty that scales better than 1/N. We examine in detail some potential problems and challenges that arise in implementing such a measurement protocol using a Bose-Einstein condensate. We discuss how some of these issues can be dealt with by using lower-dimensional condensates trapped in nonharmonic potentials.
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Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2010 Higher Education Research Data Collection
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Citation counts: TR Web of Science Citation Count  Cited 31 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 32 times in Scopus Article | Citations
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Created: Thu, 12 Nov 2009, 12:00:14 EST by Mr Andrew Martlew on behalf of ARC Centre of Excellence for Quantum-Atom Optics