Practical scheme for optimal measurement in quantum interferometric devices

Masahiro Takeoka, Masashi Ban, Masahide Sasaki

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


We apply a Kennedy-type detection scheme, which was originally proposed for a binary communications system, to interferometric sensing devices. We show that the minimum detectable perturbation of the proposed system reaches the ultimate precision bound which is predicted by quantum Neyman-Pearson hypothesis testing. To provide concrete examples, we apply our interferometric scheme to phase shift detection by using coherent and squeezed probe fields.

Original languageEnglish
Pages (from-to)16-20
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number1-2
Publication statusPublished - 2003 Jun 23
Externally publishedYes


  • Interferometry
  • Quantum Neyman-Pearson hypothesis testing
  • Quantum optimal measurement

ASJC Scopus subject areas

  • General Physics and Astronomy


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