Optimal quantum-enhanced interferometry using a laser power source

Lang, Matthias D. and Caves, Carlton M. (2013) Optimal quantum-enhanced interferometry using a laser power source. Physical Review Letters, 111 17: . doi:10.1103/PhysRevLett.111.173601

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Author Lang, Matthias D.
Caves, Carlton M.
Title Optimal quantum-enhanced interferometry using a laser power source
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2013-10-22
Year available 2013
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.111.173601
Open Access Status File (Publisher version)
Volume 111
Issue 17
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2014
Language eng
Abstract We consider an interferometer powered by laser light (a coherent state) into one input port and ask the following question: what is the best state to inject into the second input port, given a constraint on the mean number of photons this state can carry, in order to optimize the interferometer’s phase sensitivity? This question is the practical question for high-sensitivity interferometry. We answer the question by considering the quantum Cramér-Rao bound for such a setup. The answer is squeezed vacuum.
Keyword Squeezed states
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # 173601

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 26 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 25 times in Scopus Article | Citations
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Created: Sun, 24 Nov 2013, 00:18:11 EST by System User on behalf of School of Mathematics & Physics