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Teleportation of non-Gaussian states via nonlinear feedforward

Vojtěch Kala1,*, Mattia Walschaers2,†, Radim Filip1,‡, and Petr Marek1,§

  • *Contact author: kala@optics.upol.cz
  • †Contact author: mattia.walschaers@lkb.upmc.fr
  • ‡Contact author: filip@optics.upol.cz
  • §Contact author: marek@optics.upol.cz
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Phys. Rev. Applied 26, 014033 – Published 10 July, 2026

DOI: https://doi.org/10.1103/4k4w-dc3l

Abstract

Measurement-induced quantum computation with continuous-variable cluster states utilizes teleportation to transmit and alter quantum states via measurement-and-feedforward control. One of the key challenges of this approach is the deterioration of quantum states caused by the noise added due to imperfect entanglement of the cluster. We analyze the propagation of a quantum non-Gaussian state with nonlinear squeezing through a small cluster state. We show that a nonlinear feedforward in the deterministic teleportation protocol reduces the added noise and improves the nonlinear squeezing transferred. In a probabilistic regime, the improvement can be manifested even with current experimental resources. Better processing of non-Gaussian states can bring us closer to the necessary interplay between cluster states and non-Gaussianity required by quantum computing.

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Physics Subject Headings (PhySH)

Corrections

4 September, 2026

Correction: A grant number and project number in the Acknowledgments section contained typographical errors and have been fixed.

Article Text

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Outline

Information

Phys. Rev. Applied 26, 014033– Published 10 July, 2026
  • Received 28 January 2026
  • Revised 21 May 2026
  • Accepted 8 June 2026
  • Corrected 4 September 2026
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