Coherent Ising machine based on polarization symmetry breaking in a driven Kerr resonator

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Quinn, Liam and Xu, Yiqing and Fatome, Julien and Oppo, Gian-Luca and Murdoch, Stuart G and Erkintalo, Miro and Coen, Stéphane (2026) Coherent Ising machine based on polarization symmetry breaking in a driven Kerr resonator. Nature Communications, 17 (1). 2100. ISSN 2041-1723 (https://doi.org/10.1038/s41467-026-68794-6)

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Abstract

Time-multiplexed networks of degenerate optical parametric oscillators have demonstrated remarkable success in simulating coupled Ising spins, thus providing a promising route to solving complex combinatorial optimization problems. In these systems, referred to as coherent Ising machines, spins are encoded in the oscillator phases, and measured at the system output using phase-sensitive techniques, making intricate phase stabilization necessary. Here, we introduce an optical Ising machine based on spontaneous polarization symmetry breaking in a coherently driven fiber Kerr nonlinear resonator. In our architecture, the spins are encoded in the polarization state, allowing robust, all-intensity readout with off-the-shelf telecom components. By operating in a newly-discovered regime where nonlinearity and topology lock the system's symmetry, we eliminate drift and bias, enabling uninterrupted Ising trials at optical speeds for over an hour, without manual intervention. This all-fiber platform not only simplifies the hardware but also opens a path to more stable, high-throughput coherent optical optimization devices for applications from finance to drug design and beyond. [Abstract copyright: © 2026. The Author(s).]

ORCID iDs

Quinn, Liam, Xu, Yiqing, Fatome, Julien, Oppo, Gian-Luca ORCID logoORCID: https://orcid.org/0000-0002-5376-4309, Murdoch, Stuart G, Erkintalo, Miro and Coen, Stéphane;
  • Item type:Article
    ID code:95532
    Dates:
    Date
    Event
    2 March 2026
    Published
    28 January 2026
    Published Online
    16 January 2026
    Accepted
    1 September 2025
    Submitted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:11 Feb 2026 16:30
    Last modified:05 Mar 2026 13:32
    URI:https://strathprints.strath.ac.uk/id/eprint/95532
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