alicebob-cat-circuits

alicebob-cat-circuits is a skill for Claude Code, Codex from xi-zhao/OpenQuantum. It costs 51 tokens per session (839 once invoked), scanned A, original, MIT.

A local simulator for Alice & Bob cat-qubit circuits, a type of quantum circuit that encodes information in oscillator states. It builds physical or error-corrected logical noise models, compiles the gates, and returns measurement samples and the model parameters used.

In plain words
What is it for?
Use it to test physical or logical cat-qubit gate sequences, compare noise models, and check interference before interpreting finite-sample results. It supports models with one- and two-qubit gates and final Z-basis measurements.
Why use it?
It lets you compare noisy and noiseless cat-qubit circuits without sending work to a quantum computer or using a remote service. It also makes the compiled circuit and noise assumptions explicit.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to test physical or logical cat-qubit gate sequences, compare noise models, and check interference before interpreting finite-sample results. It supports models with one- and two-qubit gates and final Z-basis measurements.

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Install with agentmods
npx agentmods add skills/xi-zhao/openquantum/alicebob-cat-circuits
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add xi-zhao/OpenQuantum --skill alicebob-cat-circuits
Clone the repo
git clone --depth 1 https://github.com/xi-zhao/OpenQuantum

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for alicebob-cat-circuits

README.md
[![agentmods](https://agentmods.dev/badge/skills/xi-zhao/openquantum/alicebob-cat-circuits/github.svg)](https://agentmods.dev/skills/xi-zhao/openquantum/alicebob-cat-circuits)
Your own site
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/alicebob-cat-circuits"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/alicebob-cat-circuits/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for alicebob-cat-circuits

Your own site · 80×15
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/alicebob-cat-circuits"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/alicebob-cat-circuits.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 839 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00051 $0.00839
Opus 5.5 $0.00020 $0.00336
Sonnet 5.5 $0.00010 $0.00168
Haiku 4.5 $0.00005 $0.00084

Measured 4d ago against content hash 7655ac11a8f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

alicebob-cat-circuits scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (mcp/bridge.py, mcp/contracts.mjs, mcp/server.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/alicebob-cat-circuits/SKILL.md · 31 lines

What it actually says

Alice & Bob 猫量子位电路

原生 SDK 路径

本能力同时支持 Alice & Bob Qiskit Provider 的原生公开 API。用户需要 自定义电路、cat 噪声参数、本地 provider 与远程 provider 时,由 Agent 在固定依赖环境中编写和运行任务代码,不限于下文便捷 Tool 的预设模型。

使用 node scripts/sdk-access.mjs inspect alicebob-cat-circuits 定位环境,按完整 SDK 工作流执行。模块导航:qiskit_alice_bob_provider;导航不是 API 白名单。

下文关于模型、门集、输入与预算的限制描述便捷 Tool 的合同;原生 SDK 另受上游版本、可选依赖、宿主资源与用户授权约束。已禁用或被拒绝的动作不能借代码路径绕过。执行状态和科研验收分别报告。

适用于编码量子位上的门级模型比较。Agent 经 Harness 调用 alicebob_local 的 run_alicebob_local_circuit。此动作没有求解振子 Fock 空间中的猫态主方程。

  • 选择 physical、logical 或 logical-noiseless。输入 initialStates 按量子位 0 开始,逐个指定编码基中的 0/1/+/-;长度必须与 numQubits 相同。
  • 物理模型原生门范围 x/z/rz/cx,rz.angleRad 单位 rad。逻辑模型支持 x/z/h/s/sdg/t/tdg/cx/ccx,不接受连续 rz。macOS 上游已知不支持的 CRY/RCCX/RCCCX 不在此接口内。
  • modelParameters 可指定 kappa1Hz、kappa2Hz、averagePhotons;logical 还接受奇数 distance>=3。遵循 SDK 模型域:平均光子数至少 4、kappa1 至少 10 Hz、两损耗率之比在 1e-7 至 1e-1。
  • logical-noiseless 固定使用 SDK 无噪声参数,modelParameters 必须为空。以返回的 resolvedModelParameters 为准;物理模型 distance=0 表示未使用重复码距离。
  • Tool 用官方 builder 构造用户指定量子位数的 all-to-all 本地模型,再真实转译、调度、注入 SDK 解析噪声并运行 ProcessorSimulator。不是把预设 6Q/40Q 名称作为规模上限。
  • 末尾逐位 Z 测量,位串左端为输入量子位 0。先用 noiseless 验证逻辑干涉,再比较噪声模型;有限 shots 差异不等于硬件性能。
  • 显式执行 node scripts/setup-paper-tools.mjs alicebob-cat-circuits。此 provider 使用独立 Qiskit 1.x 环境,不与 IQM 的 Qiskit 2.x 混装。调用时不安装依赖,也不使用远程 provider。
  • 规模和资源分别由 numQubits/shots 与 execution 控制。当前 L1,scientificValidation=not_evaluated;数值回归不是科学 Acceptance。

上游与许可说明。

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago Changed · +11 lines 7655ac11a8f2
  2. 19d ago First seen · 20 lines · 51 tokens per session scan A 4fea51b359ec

Subscribe to this mod's changes

alicebob-cat-circuits is a skill published in the GitHub repository xi-zhao/OpenQuantum (75 stars, last pushed yesterday), licensed MIT. It adds 51 tokens to every session and 839 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-28.

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