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  "story": {
    "story_id": "mp-2026-11-07-018",
    "source_story_id": "tmp-brief-spoqc-transmitter",
    "edition_id": "mp-2026-11-07-morning-0120",
    "edition_url": "https://themachinepress.com/edition/2026-11-07",
    "position": 20,
    "story_type": "ticker",
    "section": "research",
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    "headline": "A CubeSat Payload Prepares a Continuous-Variable Quantum Downlink",
    "slug": "a-cubesat-payload-prepares-a-continuous-variable-quantum-downlink",
    "dek": "The SPOQC transmitter is designed, built and tested for a low-Earth-orbit quantum-key-distribution demonstration.",
    "summary": "The SPOQC transmitter is designed, built and tested for a low-Earth-orbit quantum-key-distribution demonstration.",
    "body_text": "The paper presents the payload transmitter and test results for a continuous-variable QKD downlink aboard the UK SPOQC mission, launched in March 2026. It describes a mission component, not an operational secure service or completed key exchange.",
    "why_it_matters": "The SPOQC transmitter is designed, built and tested for a low-Earth-orbit quantum-key-distribution demonstration.",
    "limitations": [
      "It describes a mission component, not an operational secure service or completed key exchange."
    ],
    "importance": 7,
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    "first_published_at": "2026-11-07T09:00:00.000-05:00",
    "modified_at": "2026-11-07T09:00:00.000-05:00",
    "content_status": "updated",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-11-07-018-001",
        "text": "The SPOQC transmitter is designed, built and tested for a low-Earth-orbit quantum-key-distribution demonstration.",
        "source_ids": [
          "source-2026-11-07-020"
        ],
        "qualification": "It describes a mission component, not an operational secure service or completed key exchange."
      }
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    "source_ids": [
      "source-2026-11-07-020"
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    "tags": [
      "quantum communications",
      "CubeSat"
    ],
    "image_url": null,
    "corrections": [
      {
        "correction_id": "correction-2026-11-07-001",
        "revision": 2,
        "summary": "Publication note: This November 7 edition was assembled before its scheduled 9:00 AM America/Detroit reveal but is being published late after recovery from a local build interruption. Its original reporting, image-generation times and scheduled publishAt are preserved.",
        "published_at": "2026-11-07T09:00:00.000-05:00",
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  "sources": [
    {
      "source_id": "source-2026-11-07-020",
      "title": "arXiv preprint 2611.07861, original v1",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2611.07861v1",
      "canonical_url": "https://arxiv.org/abs/2611.07861v1",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-11-05T06:37:29.000-05:00",
      "accessed_at": "2026-11-07T08:24:00.000-05:00",
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  "corrections": [
    {
      "correction_id": "correction-2026-11-07-001",
      "revision": 2,
      "summary": "Publication note: This November 7 edition was assembled before its scheduled 9:00 AM America/Detroit reveal but is being published late after recovery from a local build interruption. Its original reporting, image-generation times and scheduled publishAt are preserved.",
      "published_at": "2026-11-07T09:00:00.000-05:00",
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    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
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  "cite_this_report": {
    "title": "A CubeSat Payload Prepares a Continuous-Variable Quantum Downlink",
    "publisher": "The Machine Press",
    "published_at": "2026-11-07T09:00:00.000-05:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-11-07-018/a-cubesat-payload-prepares-a-continuous-variable-quantum-downlink"
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