c2lr4x4_YbBa - circuit+cooling

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Study notes · 01_c2lr4x4index

36.2 ms (jones) / 36.2 ms (transport) · 2.3 ions per transport instruction · not buildable · R10: Lean checker + tableau

24 legs on the wires of a 4 x 4 junction lattice, Yb-Ba crystals; compiled by the baseline C2LR router. LER per round 5.67e-04, 95% interval 4.9e-04 to 6.5e-04 (204 errors in 120,000 shots)

or open #step=N

From ions to noise: the stim programdownload .stim

LER per round 5.67e-04 (95%: 4.94e-04 to 6.50e-04)

204 logical errors in 120,000 shots of 3 rounds, decoder pymatching, seed 20260928; noise model qccd-noise@1. The stim circuit below has 24 detectors and 17 qubits, one per ion. Highest n̄ at a two-qubit gate: 0.671; longest chain at a gate: 2.

where the error comes from	stim	expected errors	share
The two-ion gate (ms_base)	`DEPOLARIZE2`	0.1325	45%
The two-ion gate (ms_heating)	`DEPOLARIZE2`	0.0213	7%
The two-ion gate (ms_chain)	`DEPOLARIZE2`	0.0000	0%
A one-ion pulse	`DEPOLARIZE1`	0.0078	3%
A wrong readout + A wrong readout, in the X basis	`X_ERROR, Z_ERROR`	0.0528	18%
A wrong reset	`X_ERROR`	0.0800	27%
Dephasing while the clock runs	`Z_ERROR`	0.0005	0%
total		0.2948

Hover a row for the clauses of the noise model's text that book it; the noise model, clause by clause, and every term it uses on the Evaluation page. Red lines below are noise. Each block is one hardware instruction: click it to move the animation there; the block of the current step is highlighted as the program plays.