We propose a dual-layer ontological interpretation of physical systems, termed Quantum Informational Duality (QID). According to this framework, every physical system admits two inseparable descriptions: a material–energetic layer governed by established physical laws, and a complete informational layer corresponding to the system’s total quantum state. The informational layer introduces no new particles, fields, or energy and does not violate conservation principles. Instead, it represents an ontologically real encoding of the system’s quantum state. We hypothesize that repeated structured interactions may generate persistent informational residual structures, potentially leading to measurable deviations in decoherence dynamics under controlled conditions. A falsifiable experimental protocol using superconducting qubit platforms is proposed. The framework remains speculative but testable, and its scientific validity depends entirely on independent experimental verification.