quantum-guide-algorithms-state-preparation

quantum-guide-algorithms-state-preparation is a skill for Claude Code from xi-zhao/OpenQuantum. It costs 37 tokens per session (716 once invoked), scanned A, original, MIT.

A guide for preparing quantum states, meaning setting qubits to represent chosen numbers or probability amplitudes before an algorithm runs. It routes state-preparation tasks to open-source PennyLane or Qiskit methods.

In plain words
What is it for?
Use it for arbitrary amplitudes, computational-basis superpositions, controlled rotations, multiplexed preparation, and matrix-product-state preparation with optional compression.
Why use it?
It avoids manually comparing several ways to encode data and reports checks such as state fidelity or whether auxiliary qubits were cleared.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it for arbitrary amplitudes, computational-basis superpositions, controlled rotations, multiplexed preparation, and matrix-product-state preparation with optional compression.

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Install with agentmods
npx agentmods add skills/xi-zhao/openquantum/quantum-guide-algorithms-state-preparation
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 quantum-guide-algorithms-state-preparation
Clone the repo
git clone --depth 1 https://github.com/xi-zhao/OpenQuantum

Made for: Claude Code.

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 quantum-guide-algorithms-state-preparation

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/xi-zhao/openquantum/quantum-guide-algorithms-state-preparation"><img src="https://agentmods.dev/badge/skills/xi-zhao/openquantum/quantum-guide-algorithms-state-preparation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 716 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 $0.00037 $0.00716
Opus 5.5 $0.00015 $0.00286
Sonnet 5.5 $0.00007 $0.00143
Haiku 4.5 $0.00004 $0.00072

Measured 4d ago against content hash fe995334601d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

quantum-guide-algorithms-state-preparation 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.

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/quantum-guide-algorithms-state-preparation/SKILL.md · 33 lines

What it actually says

algorithms/state-preparation

本地开源适配。上游指南 ID:algorithms/state-preparation。

分类导航:保留用户显式调用;自动任务直接选择叶子方法 Skill,或使用 quantum-algorithms 查找。

选择工作流

按用户的数学问题、输入表示、计算规模和需要的输出选择一个叶子 Skill。知识解释可直接使用原理;计算任务加载叶子 Skill,使用其中的开源实现和现有代码执行 Tool。无需为阅读指南启动额外服务。

  • quantum-mottonen:PennyLane Möttönen 均匀受控旋转态制备;输入正规化后保留复相位。
  • quantum-mps:SVD 分解、可选键截断、显式右规范化与 PennyLane MPSPrep;报告实际制备保真度及辅助位清零概率。
  • quantum-multiplexer:Qiskit StatePreparation/Isometry 的均匀受控门合成;保留复振幅、输出位序与保真度。
  • quantum-pauli:PennyLane ArbitraryStatePreparation 的 Pauli 旋转优化;报告保真度及优化状态,迭代结束不自动代表达到目标误差。
  • quantum-superposition:PennyLane Superposition 的计算基叠加与辅助位清零;系数可为复数。

全量条目见覆盖表。如果用户描述跨领域,按实际依赖组合相关叶子 Skill;不要要求用户先阅读整条目录链。

来源与边界

上游 MIT 指南:algorithms/state-preparation。原文作为参考保存在固定检索库,本文件将执行路线改为开源 SDK。来源摘要和算法模块对应关系见coverage.json,许可证与改动说明见NOTICE。

自定义 SDK 程序

示例用于解释和接口核验,不是可执行任务的边界。用户需要其他模型、数据、算法步骤、梯度或后端时,按原生 SDK 工作台在固定环境中编写并执行自定义代码;由 Agent 完成程序与工件交付。使用 quantum-algorithms 环境定位相关 SDK,保留本算法的数学假设与数值误差说明。

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 · +4 lines fe995334601d
  2. 22d ago First seen · 29 lines · 37 tokens per session scan A f805edea159a

Subscribe to this mod's changes

quantum-guide-algorithms-state-preparation is a skill published in the GitHub repository xi-zhao/OpenQuantum (75 stars, last pushed yesterday), licensed MIT. It adds 37 tokens to every session and 716 once invoked, about $0.0001 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 2026-09-25.

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