End-to-End Quantum-to-Classical Command Delivery on ibm_marrakesh via IPCM

This technical note documents a prototype-level demonstration of the Interplanetary Command Mesh (IPCM) architecture executed on IBM superconducting quantum hardware. The purpose of the work is to show that a structured quantum output can move beyond passive observation and serve as the causal trigger for a real downstream system event.

In repeated runs on the ibm_marrakesh backend, the IPCM circuit preserved a constrained dominant support family consistent with the pre-measurement state structure. A dominant measured basis state was selected from that stable support family, decoded into a command token (PING), and used to trigger a live UDP beacon from a sender machine to a separate receiving machine on a local network. The receiving endpoint successfully logged the transmitted payload, including backend, job, dominant state, and support-family data.

This result does not claim direct QPU-to-QPU signaling, faster-than-light communication, or a fielded secure communications system. Rather, it establishes a narrower but important prototype primitive: a real hardware quantum output can be decoded into an operational command and used to drive a completed cross-machine signaling event. In that sense, IPCM is demonstrated here not merely as a structured-collapse circuit, but as a working quantum-to-classical command-delivery prototype.

The note includes the prototype architecture, execution flow, real hardware job references, sender/receiver console evidence, and repeatability discussion across multiple submissions.