Heisenberg-limited metrology with a squeezed vacuum state, three-mode mixing, and information recycling

Tonekaboni, Behnam, Haine, Simon A and Szigeti, Stuart S (2015) Heisenberg-limited metrology with a squeezed vacuum state, three-mode mixing, and information recycling. Physical Review A (Atomic, Molecular and Optical Physics), 91 3: . doi:10.1103/PhysRevA.91.033616

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Author Tonekaboni, Behnam
Haine, Simon A
Szigeti, Stuart S
Title Heisenberg-limited metrology with a squeezed vacuum state, three-mode mixing, and information recycling
Journal name Physical Review A (Atomic, Molecular and Optical Physics)   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2015-03-13
Year available 2015
Sub-type Article (original research)
DOI 10.1103/PhysRevA.91.033616
Open Access Status File (Publisher version)
Volume 91
Issue 3
Total pages 9
Place of publication College Park, United States
Publisher American Physical Society
Collection year 2016
Language eng
Abstract We have previously shown that quantum-enhanced atom interferometry can be achieved by mapping the quantum state of squeezed optical vacuum to one of the atomic inputs via a beamsplitter-like process [Phys. Rev. A 90, 063630 (2014)]. Here we ask the question: is a better phase sensitivity possible if the quantum state transfer (QST) is described by a three-mode-mixing model, rather than a beamsplitter? The answer is yes, but only if the portion of the optical state not transferred to the atoms is incorporated via information recycling. Surprisingly, our scheme gives a better sensitivity for lower QST efficiencies and with a sufficiently large degree of squeezing can attain near-Heisenberg-limited sensitivities for arbitrarily small QST efficiencies. Furthermore, we use the quantum Fisher information to demonstrate the near optimality of our scheme.
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
Official 2016 Collection
 
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Created: Fri, 17 Apr 2015, 11:14:26 EST by Stuart Szigeti on behalf of Scholarly Communication and Digitisation Service