deepquantum-differentiable

deepquantum-differentiable is a skill for Claude Code, Codex from xi-zhao/OpenQuantum. It costs 46 tokens per session (1,122 once invoked), scanned A, original, MIT.

A local DeepQuantum simulator for ideal quantum circuits that computes state probabilities, Pauli measurements, and analytical gradients for selected rotation gates. A Pauli measurement is an expectation value such as the average result of measuring X, Y, or Z.

In plain words
What is it for?
Use it to inspect variational circuits, calculate observables, and verify derivatives or cross-check results with another quantum SDK. It covers qubit circuits, not photonic or other specialised DeepQuantum models.
Why use it?
It gives numerical circuit and gradient checks without hardware or network access. The returned state norm also helps reveal numerical drift instead of mistaking it for physical loss.

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 inspect variational circuits, calculate observables, and verify derivatives or cross-check results with another quantum SDK. It covers qubit circuits, not photonic or other specialised DeepQuantum models.

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Install with agentmods
npx agentmods add skills/xi-zhao/openquantum/deepquantum-differentiable
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 deepquantum-differentiable
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 deepquantum-differentiable

README.md
[![agentmods](https://agentmods.dev/badge/skills/xi-zhao/openquantum/deepquantum-differentiable/github.svg)](https://agentmods.dev/skills/xi-zhao/openquantum/deepquantum-differentiable)
Your own site
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/deepquantum-differentiable"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/deepquantum-differentiable/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 deepquantum-differentiable

Your own site · 80×15
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/deepquantum-differentiable"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/deepquantum-differentiable.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,122 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 $0.00046 $0.01122
Opus 5.5 $0.00018 $0.00449
Sonnet 5.5 $0.00009 $0.00224
Haiku 4.5 $0.00005 $0.00112

Measured 4d ago against content hash 9f397aae1a90, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

deepquantum-differentiable 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/deepquantum-differentiable/SKILL.md · 32 lines

How it starts

The opening of the file, as written. The whole thing — 32 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DeepQuantum 可微分量子线路

原生 SDK 路径

本能力同时支持 DeepQuantum 的原生公开 API。用户需要 自定义 qubit/光学电路、噪声、测量、编码与训练 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 deepquantum-differentiable 定位环境,按完整 SDK 工作流执行。模块导航:deepquantum、torch;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。

当用户需要用 DeepQuantum 计算线路期望、验证变分线路导数或与其他 SDK 交叉对照时,Agent 经 Harness 调用 deepquantum_local 提供的 differentiate_deepquantum_circuit。本 Skill 指导参数选择与结果解释;计算由 QubitCircuit + PyTorch 完成。

  • numQubits 与 gates 定义全零初态的理想酉线路。支持 H、X、Y、Z、S、T、RX、RY、RZ、CX、CZ、SWAP;双比特门的 targets 为 [control,target](SWAP 为两个交换位),角度单位 rad。
  • observables 是与量子位数同长的 I/X/Y/Z 字符串,最左字符对应 q0。例如 ZI 表示 Z0,XY 表示 X0Y1;输出期望保留输入顺序。加权 Hamiltonian 可由调用方按系数组合期望和 Jacobian,勿把 Pauli words 当作系数。
  • trainableGateIndices 明确选择 gates 数组中需要求导的 RX/RY/RZ;每项是独立参数。可填空数组只做仿真。Jacobian 行对应 observables,列严格对应该索引数组的顺序,不是所有旋转门的隐含顺序。
  • amplitudes[k] 为 [real,imag],概率向量按 q0 在最左的二进制字典序排列。返回 SDK 原始数值,不裁剪、不归一化;stateNormSquared 用来检查数值漂移。这些是精确线路仿真的数值期望,不是 finite-shots 频数。
  • 参数数量、量子位数和门数由调用方决定;完整输出按 2^N 增长,可寻址数组表示限制仍适用。资源预算通过独立 execution 参数设置,不改变线路语义。
  • OpenQuantum Harness 对大结果自动返回 openquantum-science-summary:先查看 summary.result 中的期望、Jacobian、范数与单位;需要完整态矢量时,用已有文件或 shell Tool 读取会话工作区内的 fullResult.path,再取 JSON 的 result.amplitudes / result.probabilities。omitted: true 表示数据保存在文件中,不表示零值或计算缺失;不要为了获取被省略的数据重新计算。保存失败时仍返回完整输出,科学状态保持 not_evaluated。
  • DeepQuantum 的部分固定门(包括 H)先在上游以 complex64 常量构造再提升精度;检查返回的原始范数,勿把舍入漂移当作物理损耗。这里只接可微分量子比特线路,未覆盖该 SDK 的光子/Fock/Gaussian/MPS 和分布式接口。
  • 梯度仅对当前输入的理想线路有效,不自动构成优化收敛、抗噪声能力或硬件优势结论。对复杂电路先选择解析可核对例子,必要时与第二 SDK、参数移位或有限差分对照。
  • 当前是 L1,scientificValidation=not_evaluated;成功计算与数值回归不等于最终科学 Acceptance。

首次使用前显式运行 node scripts/setup-paper-tools.mjs deepquantum-differentiable 准备固定依赖。计算不会安装依赖、提交云/QPU 或读取凭据,数值库可能写本地缓存。上游许可为 Apache-2.0,详细版本锁见本目录 pyproject.toml 和 uv.lock;官方接口来源。

Read the full file on GitHub · 32 lines

Files

What ships with it

6 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 9f397aae1a90
  2. 5d ago Changed · +1 lines 6e9d88f339f6
  3. 19d ago First seen · 20 lines · 46 tokens per session scan A 1915efadfa2e

Subscribe to this mod's changes

deepquantum-differentiable is a skill published in the GitHub repository xi-zhao/OpenQuantum (75 stars, last pushed yesterday), licensed MIT. It adds 46 tokens to every session and 1,122 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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