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    "story_id": "mp-2026-08-13-007",
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    "headline": "Diamond Emitters Found a Common Frequency",
    "slug": "diamond-emitters-found-a-common-frequency",
    "dek": "A tunable photonic interposer combined gigahertz spectral tuning, fast spin control and fiber readout on one proposed repeater-node stack.",
    "summary": "A tunable photonic interposer combined gigahertz spectral tuning, fast spin control and fiber readout on one proposed repeater-node stack.",
    "body_text": "Tin-vacancy centers in diamond naturally vary in frequency, making photons distinguishable. The demonstrated silicon-nitride photonic platform uses strain tuning and a multiphysics digital twin to bring emitters into alignment. On one node, the team reports gigahertz-scale optical tuning, electron-spin gates under 80 nanoseconds, nuclear-spin detection and commercial fiber-array readout. A separate simulation projects 99.96 percent connectivity across roughly one thousand emitters; that scale is a modeled architecture, not a deployed network.",
    "why_it_matters": "A tunable photonic interposer combined gigahertz spectral tuning, fast spin control and fiber readout on one proposed repeater-node stack.",
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      "A separate simulation projects 99.96 percent connectivity across roughly one thousand emitters; that scale is a modeled architecture, not a deployed network."
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    "first_published_at": "2026-08-13T09:00:00.000-04:00",
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    "tags": [
      "quantum networking",
      "diamond",
      "photonics",
      "spin qubits"
    ],
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  "sources": [
    {
      "source_id": "source-2026-08-13-007",
      "title": "arXiv preprint 2608.11630",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2608.11630",
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      "published_at": "2026-08-12T00:26:50.000-04:00",
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    "title": "Diamond Emitters Found a Common Frequency",
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