Surpassing the standard quantum limit in an atom interferometer with four-mode entanglement produced from four-wave mixing

Haine, S. A. and Ferris, A. J. (2011) Surpassing the standard quantum limit in an atom interferometer with four-mode entanglement produced from four-wave mixing. Physical Review A - Atomic, Molecular, and Optical Physics, 84 4: 043624.1-043624.7. doi:10.1103/PhysRevA.84.043624

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Author Haine, S. A.
Ferris, A. J.
Title Surpassing the standard quantum limit in an atom interferometer with four-mode entanglement produced from four-wave mixing
Journal name Physical Review A - Atomic, Molecular, and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2011-10-01
Year available 2011
Sub-type Article (original research)
DOI 10.1103/PhysRevA.84.043624
Open Access Status File (Publisher version)
Volume 84
Issue 4
Start page 043624.1
End page 043624.7
Total pages 7
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract We theoretically investigate a scheme for atom interferometry that surpasses the standard quantum limit. A four-wave mixing scheme similar to the recent experiment performed by Pertot et al. [Phys. Rev. Lett. 104, 200402 (2010)] is used to generate subshotnoise correlations between two modes. These two modes are then interfered with the remaining two modes in such a way as to surpass the standard quantum limit, whilst utilizing all of the available atoms. Our scheme can be viewed as using two correlated interferometers. That is, the signal from each interferometer when looked at individually is classical, but there are correlations between the two interferometers that allow for the standard quantum limit to be surpassed.
Formatted abstract
We theoretically investigate a scheme for atom interferometry that surpasses the standard quantum limit. A four-wave mixing scheme similar to the recent experiment performed by Pertot et al. [Phys. Rev. Lett. 104, 200402 (2010)] is used to generate subshotnoise correlations between two modes. These two modes are then interfered with the remaining two modes in such a way as to surpass the standard quantum limit, whilst utilizing all of the available atoms. Our scheme can be viewed as using two correlated interferometers. That is, the signal from each interferometer when looked at individually is classical, but there are correlations between the two interferometers that allow for the standard quantum limit to be surpassed.
Keyword Gyroscope
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DP0986893
Institutional Status UQ
Additional Notes Article number 043624

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2012 Collection
 
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