Estimation of the average of arbitrary unknown phase delays with Heisenberg-scaling precision

Danilo Triggiani, Vincenzo Tamma

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

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Abstract

We show an estimation scheme which reaches the Heisenberg-scaling sensitivity in the estimation of the average of the optical phases along the two arms of a Mach-Zehnder interferometer, by using a single squeezed vacuum state and homodyne detection at a single output port. We show that, in order to achieve this quantum advantage, it is required only a classical prior knowledge about the two phases, namely obtainable with a classical estimation strategy with shot-noise limited precision.
Original languageEnglish
Title of host publicationOptical and Quantum Sensing and Precision Metrology II
EditorsJacob Scheuer, Selim M. Shahriar
PublisherSociety of Photo-Optical Instrumentation Engineers
Number of pages5
ISBN (Electronic)9781510649040
ISBN (Print)9781510649033
DOIs
Publication statusPublished - 2 Mar 2022
EventSPIE OPTO - San Francisco, United States
Duration: 22 Jan 202228 Feb 2022

Publication series

NameProceedings of SPIE
PublisherSociety of Photo-Optical Instrumentation Engineers
Volume12016
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSPIE OPTO
Country/TerritoryUnited States
CitySan Francisco
Period22/01/2228/02/22

Keywords

  • Quantum Metrology
  • Heisenberg limit

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