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  • Adaptive phase measurements for narrowband squeezed beams

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    40675_1.pdf (209.7Kb)
    Author(s)
    Berry, Dominic W
    Wiseman, Howard M
    Griffith University Author(s)
    Wiseman, Howard M.
    Year published
    2006
    Metadata
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    Abstract
    We have previously [Phys. Rev. A 65, 043803 (2002)] analyzed adaptive measurements for estimating the continuously varying phase of a coherent beam, and a broadband squeezed beam. A real squeezed beam must have finite photon flux N and hence can be significantly squeezed only over a limited frequency range. In this paper we analyze adaptive phase measurements of this type for a realistic model of a squeezed beam. We show that, provided it is possible to suitably choose the parameters of the beam, a mean-square phase uncertainty scaling as (N/kappa)^{-5/8} is possible, where kappa is the linewidth of the beam resulting from ...
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    We have previously [Phys. Rev. A 65, 043803 (2002)] analyzed adaptive measurements for estimating the continuously varying phase of a coherent beam, and a broadband squeezed beam. A real squeezed beam must have finite photon flux N and hence can be significantly squeezed only over a limited frequency range. In this paper we analyze adaptive phase measurements of this type for a realistic model of a squeezed beam. We show that, provided it is possible to suitably choose the parameters of the beam, a mean-square phase uncertainty scaling as (N/kappa)^{-5/8} is possible, where kappa is the linewidth of the beam resulting from the fluctuating phase. This is an improvement over the (N/kappa)^{-1/2} scaling found previously for coherent beams. In the experimentally realistic case where there is a limit on the maximum squeezing possible, the variance will be reduced below that for coherent beams, though the scaling is unchanged.
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    Journal Title
    Physical Review A (Atomic, Molecular and Optical Physics)
    Volume
    73
    Publisher URI
    http://pra.aps.org/
    DOI
    https://doi.org/10.1103/PhysRevA.73.063824
    Copyright Statement
    © 2006 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Mathematical sciences
    Physical sciences
    Chemical sciences
    Publication URI
    http://hdl.handle.net/10072/14400
    Collection
    • Journal articles

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