# Ansatz Designer

> Parameterized quantum circuit (ansatz) design skill for variational algorithms

- Skill: `a5c-ai/ansatz-designer` (Agent Skill)
- Install (CLI): `npx skillmds@latest add a5c-ai/ansatz-designer`
- Raw SKILL.md: https://api.skillmd.com/api/skills/a5c-ai/ansatz-designer/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: a5c-ai (https://skillmd.com/u/a5c-ai)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/a5c-ai/ansatz-designer

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# Ansatz Designer

## Purpose

Provides expert guidance on designing parameterized quantum circuits (ansatze) for variational quantum algorithms, balancing expressibility with trainability.

## Capabilities

- Hardware-efficient ansatz generation
- UCCSD ansatz construction
- ADAPT-VQE ansatz building
- Expressibility analysis
- Barren plateau detection
- Custom ansatz templates
- Entanglement structure design
- Layer depth optimization

## Usage Guidelines

1. **Problem Analysis**: Determine ansatz requirements based on target Hamiltonian
2. **Architecture Selection**: Choose between hardware-efficient and problem-inspired ansatze
3. **Expressibility Testing**: Evaluate ansatz capacity to represent target states
4. **Trainability Assessment**: Check for barren plateau indicators
5. **Hardware Adaptation**: Modify ansatz for target hardware connectivity

## Tools/Libraries

- Qiskit Nature
- PennyLane
- Cirq
- TensorFlow Quantum