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Showing 1–4 of 4 results
Advanced filters: Author: Warit Asavanant Clear advanced filters

  • Optical Einstein–Podolsky–Rosen correlation is observed on a picosecond timescale in a continuous-wave system. By introducing waveguide optical parametric amplifiers and balanced detectors, the quantum correlation 4.5 dB below the shot-noise level is observed.

    • Akito Kawasaki
    • Hector Brunel
    • Akira Furusawa
    ResearchOpen Access
    Nature Photonics
    Volume: 19, P: 271-276

  • The use of optical phase sensitive amplifiers (PSA) has been shown to allow fast quantum tomography of Gaussian states, but non-Gaussian states are a key component for quantum computation using optical continuous-variable systems. Here, the authors extend PSA-enhanced high-bandwidth homodyne detection to non-Gaussian states.

    • Akito Kawasaki
    • Ryuhoh Ide
    • Akira Furusawa
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • The ability to perform nonlinear feedforward operations - that is, conditional operations controlled by nonlinear function of the measurement outcomes - is still a missing ingredient for measurement-based quantum computation. Here, the authors fill this gap using nonlinear electro-optical feedforward and non-Gaussian ancillary states.

    • Atsushi Sakaguchi
    • Shunya Konno
    • Akira Furusawa
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8