OpenFermion Hamiltonian

SkillDev tools

Molecular Hamiltonian construction skill using OpenFermion

Use OpenFermion Hamiltonian in Claude, ChatGPT or Ahel Desktop

Free. Sign in, add OpenFermion Hamiltonian and connect your AI. About a minute.

Claude ChatGPT Ahel Desktop

Also: Claude Code · Cursor · Codex

Then ask your AI: use the OpenFermion Hamiltonian skill

Details

Instructions available. Your AI can read the instructions. Execution depends on the setup they require.

Account requirements not reviewed. Check the skill instructions before use; Ahel provides instructions and does not run this skill.

No other account needed.

Add Ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

OpenFermion HamiltonianStart free

What this skill tells your AI

The instructions your AI receives, as published by a5c-ai/babysitter in library/specializations/domains/science/quantum-computing/skills/openfermion-hamiltonian/SKILL.md and read by Ahel’s review.

Purpose

Provides expert guidance on molecular Hamiltonian construction and fermion-to-qubit mappings using OpenFermion for quantum chemistry applications.

Capabilities

Molecular Hamiltonian generation
Jordan-Wigner transformation
Bravyi-Kitaev transformation
Parity transformation
Second quantization handling
Symmetry reduction
Active space selection
Hamiltonian term grouping

Usage Guidelines

Molecular Setup: Define molecular geometry and basis set
Hamiltonian Generation: Compute molecular integrals and construct Hamiltonian
Transformation Selection: Choose appropriate fermion-to-qubit mapping
Qubit Reduction: Apply symmetry and active space reductions
Term Analysis: Analyze Hamiltonian structure for circuit design

Tools/Libraries

OpenFermion
OpenFermion-PySCF
OpenFermion-Psi4
Qiskit Nature
PennyLane

Signals

GitHub stars: 2k
Forks: 113
Last commit: Sep 2026

Advanced

Item type: skill
Key: openfermion-hamiltonian
Source: github.com/a5c-ai/babysitter

github.com/a5c-ai/babysitter