C063 - For a drive (C) Rabi-frequency imbalance Omega_C^{(2)} = Omega_C^{(1)}(1+epsilon) with th...
Verdict: verified
Location: Supp. Mat. S3
Type / expected artifact: numeric / math / numeric
Claim: For a drive (C) Rabi-frequency imbalance Omega_C^{(2)} = Omega_C^{(1)}(1+epsilon) with theta=3 pi/4, the singlet is repumped with probability p ~= 1.4 epsilon^2 per cycle, so p<<1e-4 requires epsilon<<1e-2.
Models: extraction claude-opus-4-8; verification gpt-5; verification_chain claude-opus-4-8 -> gpt-5; verdict_chain verified -> verified.
Source location(s): source/supp_content.tex:121 (Supp. Mat. S3).
Conclusion
Paper: drive-C imbalance Omega_C^(2)=Omega_C^(1)(1+eps), theta=3pi/4 -> singlet repumped with p~1.4 eps^2/cycle; p<<1e-4 needs eps<<1e-2. Simulation (U_C -> per-ion rotations theta and theta(1+eps), one cycle S_C_imb S_B S_A applied to |Psi->): per-cycle singlet loss is purely quadratic, p/eps^2=1.388 over eps in [0.002,0.05], LSQ fit c=1.386 vs paper 1.4 (~1%). Threshold p<<1e-4 -> eps<<8.5e-3, consistent with eps<<1e-2. Clean match -> verified.
Verification details
Executable rerun: run.py exited 0 in 0.538s; log verification/C063/attempts/R002/run.log.
Output excerpt:
=== C063: per-cycle singlet-loss vs drive-C imbalance eps (theta=3pi/4) ===
eps p=1-F(|Psi->) p/eps^2
0.000 4.440892e-16 nan
0.002 5.551642e-06 1.3879
0.005 3.469743e-05 1.3879
0.010 1.387849e-04 1.3878
0.020 5.550625e-04 1.3877
0.030 1.248602e-03 1.3873
0.050 3.465772e-03 1.3863
least-squares fit p = c*eps^2 : c = 1.3865