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  • Photonic polarization gears for ultra-sensitive angular measurements

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    Author(s)
    D'Ambrosio, Vincenzo
    Spagnolo, Nicolo
    Del Re, Lorenzo
    Slussarenko, Sergei
    Li, Ying
    Kwek, Leong Chuan
    Marrucci, Lorenzo
    Walborn, Stephen P
    Aolita, Leandro
    Sciarrino, Fabio
    Griffith University Author(s)
    Slussarenko, Sergei
    Year published
    2013
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    Abstract
    Quantum metrology bears a great promise in enhancing measurement precision, but is unlikely to become practical in the near future. Its concepts can nevertheless inspire classical or hybrid methods of immediate value. Here we demonstrate NOON-like photonic states of m quanta of angular momentum up to m=100, in a setup that acts as a 'photonic gear', converting, for each photon, a mechanical rotation of an angle ? into an amplified rotation of the optical polarization by m?, corresponding to a 'super-resolving' Malus' law. We show that this effect leads to single-photon angular measurements with the same precision of ...
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    Quantum metrology bears a great promise in enhancing measurement precision, but is unlikely to become practical in the near future. Its concepts can nevertheless inspire classical or hybrid methods of immediate value. Here we demonstrate NOON-like photonic states of m quanta of angular momentum up to m=100, in a setup that acts as a 'photonic gear', converting, for each photon, a mechanical rotation of an angle ? into an amplified rotation of the optical polarization by m?, corresponding to a 'super-resolving' Malus' law. We show that this effect leads to single-photon angular measurements with the same precision of polarization-only quantum strategies with m photons, but robust to photon losses. Moreover, we combine the gear effect with the quantum enhancement due to entanglement, thus exploiting the advantages of both approaches. The high 'gear ratio' m boosts the current state of the art of optical non-contact angular measurements by almost two orders of magnitude.
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    Journal Title
    Nature Communications
    Volume
    4
    DOI
    https://doi.org/10.1038/ncomms3432
    Copyright Statement
    © The Author(s) 2013. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) License (http://creativecommons.org/licenses/by-nc-nd/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited. You may not alter, transform, or build upon this work.
    Subject
    Classical and physical optics
    Quantum optics and quantum optomechanics
    Publication URI
    http://hdl.handle.net/10072/57209
    Collection
    • Journal articles

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