Staging installation · synthetic data · not a permanent scientific record · 673dc18 · Merge dev taxonomy work into staging
Circuit Bench

Circuit revision

Surface-code logical CNOT d=3

Published

Description

Synthetic circuit used only to exercise Circuit Bench plots and filters.

Revision note: Synthetic first revision.

Noise model
Fixed phenomenological noise
Priors randomised
No
Code distance upper bound
3
Circuit distance upper bound
3
Rounds
9
Detectors
410
Errors
2,100
Observables
1
CSS
Yes
X only
Yes
Z only
No
Files and DEM construction Schema circuit/0.1

Files

RoleFileBytesSHA-256
Sampling circuit surface-cnot-d3.stim 91 3ac79c463a3298e9632e339a7f9a6d68079887466f827eb22071512e6b71f9b9
Detector error model surface-cnot-d3.dem 64 cd7515641e2cdd2ea775649e1d1cce1977df6160791e6b68c7a9ed8009ac5204
Manifest surface-cnot-d3-manifest.json 67 a2798811b05c5c3ee2dddf33bd6c42b8e273d3d70d8410dc98303f39eb336b56

Detector error model construction

Stim version
1.15.0
Method
stim.Circuit.detector_error_model
Decompose errors
false
Flatten loops
false
Allow gauge detectors
false
Approximate disjoint errors
No
Ignore decomposition failures
false
Block remnant edges
false
Record history 3 events · revisions and publication decisions
  1. Submitted Casey Circuit Submission event synthesised during history migration. Surface-code logical CNOT d=3
    Event details
    Sequence
    1

    Structured details

    {
  "migration_inferred": true,
  "projected_state": "published"
}

    Canonical submitted snapshot

    {
  "data": {
    "migration_inferred": true,
    "record_id": "3f41c32d-4804-53ec-bcdc-6a9bbbf1ceb8",
    "schema_release_id": "897d7453-dc92-538f-b1f8-7ef49c6235be"
  },
  "schema": {
    "record_type": "circuit",
    "version": "0.1"
  }
}
  2. Approved System (migration_backfill) Historical approval actor was not recorded. Surface-code logical CNOT d=3
    Event details
    Sequence
    2

    Structured details

    {
  "approval_route": "legacy_unknown",
  "migration_inferred": true
}
  3. Published System (migration_backfill) Publication event synthesised from the lifecycle projection. Surface-code logical CNOT d=3
    Event details
    Sequence
    3
    Caused by
    Event 2

    Structured details

    {
  "migration_inferred": true
}

Decoder results on this circuit

Scripted query (OData 4.01 subset)
Syntax and field reference
Decoding algorithm filters, 0 applied
Algorithm tags all of
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Circuit Bench
Machine filters, 0 applied

The current population contains 7 published results. Its filters, query, plot, and sort describe the same population.

Show plotter Hide plotter 6 /7 points
LER upper 95% @ 5% acceptance against t₁₀₀₀ 6 of 7 results plotted; 1 omitted (1 with at least one null axis value).
Main plot settings axes, scales and visible ranges

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Advanced plot settings uncertainty, grid and marker appearance
Scatter plot of LER upper 95% @ 5% acceptance against t₁₀₀₀; x is linear and y is linear. Points retain the caller's result order. Stored intervals are displayed as bars. 6 of 7 results have plottable axis values. 0 5 · 107 1 · 108 1.5 · 108 2 · 108 0.1 0.2 0.3 0.4 0.5 t₁₀₀₀ ns · linear LER upper 95% @ 5% acceptance probability · linear
Point details and field definitions

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x-axis
t_1000_ns — t₁₀₀₀ (ns), linear scale, lower is better. Definition
y-axis
score_ler_upper_95_at_5pct_acceptance_v0_1 — LER upper 95% @ 5% acceptance (probability), linear scale, lower is better. Definition
uncertainty
Whisker bars. 0 x-axis and 6 y-axis stored intervals are available in this plotted population. Only complete lower/upper intervals stored under the selected score definition are drawn; Circuit Bench does not infer missing errors.
Plot data
Tabular data for this plot (6 rows)
LER upper 95% @ 5% acceptance against t₁₀₀₀; omitted points are reported above.
Record Result UUID t₁₀₀₀ (ns) LER upper 95% @ 5% acceptance (probability)
Clear Matcher v0.2 28719784-5a3b-5296-9057-6b6ebcee9e09 0.24 probability
Sparse BP+OSD v0.1 89b80853-b04c-5669-b11f-7c977e33a201 0.16 probability
Streaming Cluster v0.1 6a93968e-fd7a-57e6-86b9-bfcac2439d36 0.512 probability
Sweep Cellular v0.1 40c6b70c-7b55-5215-8256-67b2f199de2e 0.432 probability
Tensor Trail v0.1 413b8677-bd0e-5134-939c-845e967ba8fe
Union-Find Sprint v0.1 602fbb75-b0e4-5720-ae38-fa0e84bd443c 0.368 probability
7 records Sort: Decoder ascending

Table view options

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Visible columns
Decoder 1↑ Version Algorithm tags Machine type Machine Shots LER upper 95% @ 5% t₁₀₀₀ (ns) Evaluator scores Reproduction Published
Clear Matcher0.2CPUdemo-eight-core-cpu170,000 0.24 probability Brier loss upper 95% bound: 3.2 · 10⁻² probability; LER upper 95% bound at 5% acceptance: 0.24 probabilityDecoder-author submitted/approved31 Aug 2026, 12:55 a.m.
Neural Syndrome0.1GPUdemo-single-gpu170,000 0.122 probability —Brier loss upper 95% bound: 2.016 · 10⁻² probability; LER upper 95% bound at 5% acceptance: 0.1216 probabilityIndependent reproduction31 Aug 2026, 1:19 a.m.
Sparse BP+OSD0.1GPUdemo-single-gpu170,000 0.16 probability Brier loss upper 95% bound: 2.4 · 10⁻² probability; LER upper 95% bound at 5% acceptance: 0.16 probabilityIndependent reproduction31 Aug 2026, 1:11 a.m.
Streaming Cluster0.1FPGAdemo-fpga-board170,000 0.512 probability Brier loss upper 95% bound: 5.92 · 10⁻² probability; LER upper 95% bound at 5% acceptance: 0.512 probabilityIndependent reproduction31 Aug 2026, 1:43 a.m.
Sweep Cellular0.1FPGAdemo-fpga-board170,000 0.432 probability Brier loss upper 95% bound: 5.12 · 10⁻² probability; LER upper 95% bound at 5% acceptance: 0.432 probabilityIndependent reproduction31 Aug 2026, 1:27 a.m.
Tensor Trail0.1GPUdemo-single-gpu170,000 Brier loss upper 95% bound: 1.76 · 10⁻² probability; LER upper 95% bound at 5% acceptance: 9.6 · 10⁻² probabilityIndependent reproduction31 Aug 2026, 1:35 a.m.
Union-Find Sprint0.1CPUdemo-eight-core-cpu170,000 0.368 probability Brier loss upper 95% bound: 4.48 · 10⁻² probability; LER upper 95% bound at 5% acceptance: 0.368 probabilityIndependent reproduction31 Aug 2026, 1:03 a.m.