• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Quantum-Enhanced Optical-Phase Tracking

    Thumbnail
    View/Open
    80882_1.pdf (723.1Kb)
    Author(s)
    Yonezawa, Hidehiro
    Nakane, Daisuke
    Wheatley, Trevor A
    Iwasawa, Kohjiro
    Takeda, Shuntaro
    Arao, Hajime
    Ohki, Kentaro
    Tsumura, Koji
    Berry, Dominic W
    Ralph, Timothy C
    Wiseman, Howard M
    Huntington, Elanor H
    Furusawa, Akira
    Griffith University Author(s)
    Wiseman, Howard M.
    Year published
    2012
    Metadata
    Show full item record
    Abstract
    Tracking a randomly varying optical phase is a key task in metrology, with applications in optical communication. The best precision for optical-phase tracking has until now been limited by the quantum vacuum fluctuations of coherent light. Here, we surpass this coherent-state limit by using a continuous-wave beam in a phase-squeezed quantum state. Unlike in previous squeezing-enhanced metrology, restricted to phases with very small variation, the best tracking precision (for a fixed light intensity) is achieved for a finite degree of squeezing because of Heisenberg's uncertainty principle. By optimizing the squeezing, we ...
    View more >
    Tracking a randomly varying optical phase is a key task in metrology, with applications in optical communication. The best precision for optical-phase tracking has until now been limited by the quantum vacuum fluctuations of coherent light. Here, we surpass this coherent-state limit by using a continuous-wave beam in a phase-squeezed quantum state. Unlike in previous squeezing-enhanced metrology, restricted to phases with very small variation, the best tracking precision (for a fixed light intensity) is achieved for a finite degree of squeezing because of Heisenberg's uncertainty principle. By optimizing the squeezing, we track the phase with a mean square error 15 ᠴ% below the coherent-state limit.
    View less >
    Journal Title
    Science
    Volume
    337
    Issue
    6101
    DOI
    https://doi.org/10.1126/science.1225258
    Copyright Statement
    © The Author(s) 2012. This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science on Vol. 337, 21 September 2012, DOI: dx.doi.org/10.1126/science.1225258.
    Subject
    Quantum Optics
    Publication URI
    http://hdl.handle.net/10072/48616
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander