The Quantum Harp Experiment

We introduce the Quantum Harp (QH), a thought experiment designed to explore the con-ceptual limits of quantum entanglement, information transfer, and spacetime structure. Theexperiment postulates a mechanism enabling instantaneous state updates between arbitrarilydistant systems sharing a hypothetical, perfect entanglement resource (the "Harp"). We rigor-ously define the operational premise of the QH interaction function, H. Analyzing the QH withinthe frameworks of Special and General Relativity reveals apparent paradoxes related to simul-taneity and causality. We interpret them constructively as opportunities and as highlightingthe extreme physical conditions or fundamentally new physics (potentially related to wormholes, Closed Timelike Curves, or quantum gravity non-locality) required forsuch a mechanism to operate consistently. We explore the basic implications for informationencoding and decoding using single vs. multiple entangled "strings," and introduce multi-party(Alice, Bob, Charlie) scenarios revealing potential for instant broadcast and correlation controlunder the QH premise. The Quantum Harp experiment serves not as a proposal for a real de-vice, but as a sharply defined theoretical construct acting as a theoretical scenario to investigatethe interplay between quantum non-locality, relativistic causality, and the fundamental natureof information transfer in physics and potentially novel computational paradigms. The coreformalism defining the QH interaction (H) and the resulting system dynamics are presentedherein.