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  • Nanophotonic source of quadrature squeezing via self-phase modulation

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    Author(s)
    Cernansky, Robert
    Politi, Alberto
    Griffith University Author(s)
    Cernansky, Robert
    Year published
    2020
    Metadata
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    Abstract
    Squeezed light is optical beams with variance below the shot noise level. They are a key resource for quantum technologies based on photons, and they can be used to achieve better precision measurements and improve security in quantum key distribution channels and as a fundamental resource for quantum computation. Here, we demonstrate an integrated source of squeezing based on four-wave mixing that requires a single laser pump, measuring 0.45 dB of broadband quadrature squeezing at high frequencies. We identify and verify that the current results are limited by excess noise produced in the chip and propose ways to reduce it. ...
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    Squeezed light is optical beams with variance below the shot noise level. They are a key resource for quantum technologies based on photons, and they can be used to achieve better precision measurements and improve security in quantum key distribution channels and as a fundamental resource for quantum computation. Here, we demonstrate an integrated source of squeezing based on four-wave mixing that requires a single laser pump, measuring 0.45 dB of broadband quadrature squeezing at high frequencies. We identify and verify that the current results are limited by excess noise produced in the chip and propose ways to reduce it. Calculations suggest that an improvement in the optical properties of the chip achievable with existing technology can develop scalable quantum technologies based on light.
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    Journal Title
    APL Photonics
    Volume
    5
    Issue
    10
    DOI
    https://doi.org/10.1063/5.0024341
    Copyright Statement
    © 2020 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in APL Photonics 5, 101303 (2020) and may be found at https://doi.org/10.1063/5.0024341
    Subject
    Atomic, molecular and optical physics
    Science & Technology
    Physical Sciences
    Optics
    Physics, Applied
    Publication URI
    http://hdl.handle.net/10072/402034
    Collection
    • Journal articles

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