qpu

The Google Quantum AI layer: the Willow processor as its spec sheet states it, Cirq gates and circuits, Quantum Echoes with the benchmark Google states, and one MCP surface that compiles them on request.

• Processor: the Willow spec sheet, figure by figure.
• Cirq: the gates, circuits and simulator this repository implements.
• Quantum Echoes: the protocol and the stated benchmark.
• MCP tools: the tools, with their input schemas.
• Playground: call a tool in the browser.