{
  "$schema": "https://themachinepress.com/schemas/story-v1.schema.json",
  "schema_version": "1.0.0",
  "document_type": "machine_press_story",
  "story": {
    "story_id": "mp-2026-11-12-013",
    "source_story_id": "tmp-story-prism-quantum-decoder",
    "edition_id": "mp-2026-11-12-morning-0125",
    "edition_url": "https://themachinepress.com/edition/2026-11-12",
    "position": 13,
    "story_type": "dispatch",
    "section": "chips-infrastructure",
    "editorial_classification": "editorial",
    "headline": "The Quantum Decoder Reaches Microseconds",
    "slug": "the-quantum-decoder-reaches-microseconds",
    "dek": "PRISM uses erasure locations in photonic fault-tolerance protocols and runs a distance-eight logical block on an FPGA in 6.59 microseconds.",
    "summary": "PRISM uses erasure locations in photonic fault-tolerance protocols and runs a distance-eight logical block on an FPGA in 6.59 microseconds.",
    "body_text": "PRISM is a transformer decoder for photonic fusion-based quantum computing, where photon loss and probabilistic fusion produce known erasure locations. Across surface, color and quantum low-density parity-check codes up to distance 24, the authors report logical error rates matching integer-programming decoders while running faster, including near high erasure rates. An FPGA implementation decoded a distance-eight block in 6.59 microseconds with 1.56 microseconds amortized per logical block. The result demonstrates real-time inference on the tested protocols and hardware, not a complete fault-tolerant computer.",
    "why_it_matters": "PRISM uses erasure locations in photonic fault-tolerance protocols and runs a distance-eight logical block on an FPGA in 6.59 microseconds.",
    "limitations": [
      "The result demonstrates real-time inference on the tested protocols and hardware, not a complete fault-tolerant computer."
    ],
    "importance": 8,
    "canonical_url": "https://themachinepress.com/story/mp-2026-11-12-013/the-quantum-decoder-reaches-microseconds",
    "json_url": "https://themachinepress.com/story/mp-2026-11-12-013.json",
    "first_published_at": "2026-11-12T09:00:00.000-05:00",
    "modified_at": "2026-11-12T09:00:00.000-05:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-11-12-013-001",
        "text": "PRISM uses erasure locations in photonic fault-tolerance protocols and runs a distance-eight logical block on an FPGA in 6.59 microseconds.",
        "source_ids": [
          "source-2026-11-12-013"
        ],
        "qualification": "The result demonstrates real-time inference on the tested protocols and hardware, not a complete fault-tolerant computer."
      }
    ],
    "source_ids": [
      "source-2026-11-12-013"
    ],
    "tags": [
      "quantum",
      "decoder",
      "fpga",
      "photonics"
    ],
    "image_url": "https://themachinepress.com/issues/2026-11-12/prism-quantum-chip.webp",
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-11-12-013",
      "title": "arXiv:2611.13630v1",
      "publisher": "arXiv / Cornell University",
      "url": "https://arxiv.org/abs/2611.13630v1",
      "canonical_url": "https://arxiv.org/abs/2611.13630v1",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-11-10T01:18:48.000-05:00",
      "accessed_at": "2026-11-12T08:24:40.465-05:00",
      "supports_claim_ids": [
        "claim-mp-2026-11-12-013-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "The Quantum Decoder Reaches Microseconds",
    "publisher": "The Machine Press",
    "published_at": "2026-11-12T09:00:00.000-05:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-11-12-013/the-quantum-decoder-reaches-microseconds"
  }
}