qiskit

combined

Builds, simulates, transpiles, and executes quantum circuits with Qiskit and IBM Quantum Runtime. Use for Qiskit 2.x circuits and operators, V2 Sampler or Estimator primitives, target-aware transpilation, local or noisy simulation, IBM QPU execution, Runtime sessions or batches, error mitigation, and Qiskit ecosystem packages. Qiskit is the world's most popular open-source quantum computing framework with 13M+ downloads. Build quantum circuits, optimize for hardware, execute on simulators or real quantum computers, and analyze results. Supports IBM Quantum (100+ qubit systems), IonQ, Amazon Braket, and other providers.

When to use

You are building or optimizing quantum circuits with Qiskit for simulators or real hardware.
You need IBM Quantum-style tooling for transpilation, execution, visualization, or algorithm libraries.
You want guidance on moving from a simple circuit prototype to backend-aware execution.

When not to use

Use this skill only when the task clearly matches the scope described above.
Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.

Skill page

Conflict

The K-Dense copy is a specific, version-pinned procedure for Qiskit 2.x and IBM Runtime 0.50, including a critical deprecation warning for SamplerV2/EstimatorV2 and a strict 5-step hardware workflow. The sickn33 copy is a broad, version-agnostic catalog that covers a wider range of topics (visualization, algorithms, third-party backends) but lacks the specific API migration details and the strict 'transpile once' constraint found in the K-Dense copy. Because the K-Dense copy contains material steps and constraints (specific import paths for deprecated primitives, specific version pins) that the other lacks, and the sickn33 copy contains material scope (visualization, algorithm libraries) that the other lacks, crowning one would hide a real alternative or lose critical technical detail.