Design of an optimal quantum receiver for interferometric sensing devices

Masahiro Takeoka, Masahide Sasaki, Masashi Ban

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


A practically realizable detection scheme that corresponds to the optimal measurement strategy within the Neyman-Pearson approach is proposed. The pure state probe field is generally described by | ψ0> = Û|0>, where Û is the unitary operator that defines the quantum property of the probe field. The prepared probe field is incident into the black box in which the unitary perturbative operation Ûp(g) sometimes occurs, where g is the small parameter, such as the small phase shift, to be detected. The output field (|ψ0> or |ψ1> = Ûp(g) |ψ0>) is then measured by the positive operator-valued measure (POVM) which consists of the reverse process of the preparation of the probe field and the photodetection process that discriminates if the field includes zero or non-zero photons. This is an application of the Kennedy detection scheme which has been considered as the detector for a binary communications system. The detection probability of the scheme is given by Pd = 1-|ψ0p(g) |ψ0|2 that is what expected from the mathematical optimization procedure of the Neyman-Pearson hypothesis testing. The scheme is easily applicable to various quantum states such as the coherent or the squeezed probe fields, and so on.

Original languageEnglish
Title of host publication2003 European Quantum Electronics Conference, EQEC 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages1
ISBN (Electronic)0780377338, 9780780377332
Publication statusPublished - 2003
Externally publishedYes
EventEuropean Quantum Electronics Conference, EQEC 2003 - Munich, Germany
Duration: 2003 Jun 222003 Jun 27

Publication series

Name2003 European Quantum Electronics Conference, EQEC 2003


OtherEuropean Quantum Electronics Conference, EQEC 2003

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics


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