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    "headline": "A Nonlinear Amplifier Preserved Every Phase Angle",
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    "dek": "The constrained noise-limited class is optimized for Yurke–Stoler cat states and Kerr kitten states.",
    "summary": "The constrained noise-limited class is optimized for Yurke–Stoler cat states and Kerr kitten states.",
    "body_text": "The theory characterizes deterministic nonlinear amplifiers that treat all angles of bosonic phase space uniformly while remaining at the quantum noise limit. Their restricted form supplies an optimum for two families of nonclassical states; the paper establishes a mathematical class, not an experimental device.",
    "why_it_matters": "The constrained noise-limited class is optimized for Yurke–Stoler cat states and Kerr kitten states.",
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      "Their restricted form supplies an optimum for two families of nonclassical states; the paper establishes a mathematical class, not an experimental device."
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        "qualification": "Their restricted form supplies an optimum for two families of nonclassical states; the paper establishes a mathematical class, not an experimental device."
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    "tags": [
      "quantum amplifiers",
      "bosonic modes",
      "cat states"
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      "title": "arXiv preprint 2609.20644",
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