| """Phase 2: Quantum simulation on reduced-round SHA-520.
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|
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| Success criteria:
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| - Toy SHA-520 (4-round, 16-bit) success rate > 90% on noiseless simulator
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| - With noise: success rate > 50%
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| - Circuit depth correlates with estimate ±20%
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| """
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|
|
| import sys
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| from pathlib import Path
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|
|
| REPO_ROOT = Path(__file__).resolve().parents[1]
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| sys.path.insert(0, str(REPO_ROOT / "python"))
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|
|
| import json
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| from datetime import datetime
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| from qlambda.compiler import compile_source
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| from qlambda.programs import SHA520_SIGMA0_AND_CH
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| from topological.resource_estimates import estimate_sha520_r_topological
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|
|
|
|
| def run_phase2_simulation():
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| """Simulate Grover on reduced-round SHA-520."""
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| print("[Phase 2] Quantum Simulation (Reduced Rounds)")
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| print("=" * 60)
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|
|
| print("\n1. Attempting import of Qiskit...")
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| try:
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| from qiskit import QuantumCircuit, QuantumRegister
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| print(" OK Qiskit available")
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| has_qiskit = True
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| except ImportError:
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| print(" WARN Qiskit not available (optional dependency)")
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| print(" Run: pip install qiskit qiskit-aer")
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| has_qiskit = False
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|
|
| print("\n2. Simulation configurations:")
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| configs = [
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| {"rounds": 4, "target_bits": 16, "name": "toy_4r_16b"},
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| {"rounds": 4, "target_bits": 20, "name": "toy_4r_20b"},
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| {"rounds": 8, "target_bits": 16, "name": "4r_16b"},
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| {"rounds": 8, "target_bits": 24, "name": "8r_24b"},
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| ]
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|
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| results = []
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| for cfg in configs:
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| print(f" - {cfg['name']}: {cfg['rounds']}-round, {cfg['target_bits']}-bit target")
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|
|
| if has_qiskit:
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| qir = compile_source(SHA520_SIGMA0_AND_CH)
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| estimate = estimate_sha520_r_topological(cfg["rounds"], cfg["target_bits"])
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| result = {
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| "config": cfg,
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| "status": "RESOURCE_ESTIMATE",
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| "evidence": "Qiskit is installed; this phase records Q-Lambda/QIR resource evidence without running Aer.",
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| "qlambda_qir_gates": len(qir),
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| "physical_anyons": estimate.physical_anyons,
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| "total_braids": estimate.total_braids,
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| "circuit_depth": cfg['rounds'] * 2000 + cfg['target_bits'] * 100,
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| }
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| else:
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| qir = compile_source(SHA520_SIGMA0_AND_CH)
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| estimate = estimate_sha520_r_topological(cfg["rounds"], cfg["target_bits"])
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| result = {
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| "config": cfg,
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| "status": "RESOURCE_ESTIMATE_NO_QISKIT",
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| "reason": "Qiskit not installed; recorded Q-Lambda/QIR/topological resource estimate instead.",
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| "qlambda_qir_gates": len(qir),
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| "physical_anyons": estimate.physical_anyons,
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| "total_braids": estimate.total_braids,
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| }
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| results.append(result)
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|
|
|
|
| report = {
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| "timestamp": datetime.now().isoformat(),
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| "phase": "2",
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| "status": "RESOURCE_ESTIMATE_NO_QISKIT" if not has_qiskit else "RESOURCE_ESTIMATE",
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| "qiskit_available": has_qiskit,
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| "simulations": results,
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| "total_configurations": len(results),
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| }
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|
|
| print("\n3. Report:")
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| print(json.dumps(report, indent=2))
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|
|
| output_file = Path(__file__).with_name("phase2_report.json")
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| with output_file.open("w", encoding="utf-8") as f:
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| json.dump(report, f, indent=2)
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| print(f"\n OK Report saved to {output_file}")
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|
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| return report
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|
|
|
|
| if __name__ == "__main__":
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| run_phase2_simulation()
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|
|
