Quantum states for Heisenberg-limited interferometry

Research output: Contribution to journalArticle

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Abstract

The phase sensitivity of interferometers is limited by the so-called Heisenberg limit, which states that the optimum phase sensitivity is inversely proportional to the number of interfering particles N, a 1 N improvement over the standard quantum limit. We have used simulated annealing, a global optimization strategy, to systematically search for quantum interferometer input states that approach the Heisenberg-limited uncertainty in estimates of the interferometer phase shift. We compare the performance of these states to that of other nonclassical states already known to yield Heisenberg-limited uncertainty.

Original languageEnglish (US)
Article number013804
JournalPhysical Review A
Volume76
Issue number1
DOIs
StatePublished - Jul 9 2007

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interferometry
interferometers
simulated annealing
phase shift
optimization
estimates

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

Cite this

Quantum states for Heisenberg-limited interferometry. / Uys, H.; Meystre, Pierre.

In: Physical Review A, Vol. 76, No. 1, 013804, 09.07.2007.

Research output: Contribution to journalArticle

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