{"query": "Quantum computing — qubits and superposition", "count": 7, "results": [{"id": "card_floor_quantum_computing", "title": "Quantum computing — qubits and superposition", "shelf": "codex", "surface": "secular", "snippet": "A qubit is a superposition of 0 and 1, so n qubits hold 2^n amplitudes; the power is interference (Grover, Shor). Pillars rest on quantum mechanics (superposition, entanglement) and computer science (", "authority_tier": "engine_derived", "source": "Narrow Highway — qc", "readable": false, "generated": false}, {"id": "card_theory_quantum_error_correction", "title": "Quantum error correction & the threshold theorem", "shelf": "theories", "surface": "secular", "snippet": "Quantum error correction & the threshold theorem — an engine domain that can touch it: quantum_computing. Calibration: partial — specific relations verify; the theory as a whole is not a sealable comp", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (lone-domain seeding)", "readable": false, "generated": false}, {"id": "card_domchk_quantum_computing_claimed_normalized", "title": "Quantum Computing: normalized", "shelf": "quantum_computing", "surface": "secular", "snippet": "A worked check in quantum computing: normalized.\n\nGIVEN\n  amplitudes = [0.6, 0.8]\n  density_eigenvalues = [0.5, 0.5]\n  inner_product = 0.707\n  n_items = 64\n  qber = 0.09\n  qber_threshold = 0.11\n  shor", "authority_tier": "reference", "source": "The verifier's own documented relation, and a run this engine performed against it (deterministic; re-runnable with tools/domain_goldens.py)", "readable": false, "generated": false}, {"id": "card_src_openstax_university_physics_volume_3_introduction_018ccaf5", "title": "Introduction — University Physics Volume 3", "shelf": "physics", "surface": "secular", "snippet": "Figure\n7.1\n\nA D-wave qubit processor: The brain of a quantum computer that encodes information in quantum bits to perform complex calculations. (credit: modification of work by D-Wave Systems, Inc.)\n\n", "authority_tier": "reference", "source": "OpenStax: University Physics Volume 3 (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_calc_v_quantum_computing_qubit_normalization", "title": "Qubit normalization", "shelf": "calculations", "surface": "secular", "snippet": "Qubit normalization — quantum_computing. Formula: sum |amp|^2 = 1. Canonical FORM: conservation (in = out + change_in_store) — engine verifier quantum_computing.qubit_normalization — the deterministic", "authority_tier": "reference", "source": "The Calculation Map — every calculation, mapped by form", "readable": false, "generated": false}, {"id": "card_qc_superposition", "title": "Superposition - the exponential state space", "shelf": "codex", "surface": "secular", "snippet": "n qubits carry 2^n amplitudes at once (sealed); the resource is superposition and entanglement.", "authority_tier": "engine_derived", "source": "Narrow Highway — qc", "readable": false, "generated": false}, {"id": "card_seal_632eaf43e522a946dff3d84040d9fce52ce72fbe8b233afd63b0a428f2b30dcb", "title": "Receipt 632eaf43e522… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"mathematics\",\n  \"dimensions\": [\n   \"reasoning\"\n  ]\n },\n \"gate_results\": [\n  {\n   \"details\": {\n    \"broken_at\": null,\n    \"confirmed_steps\": 1,\n    \"error", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_floor_quantum_computing"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}