Modern quantum communication protocols, primarily utilizing quantum key distribution (QKD) derived from entanglement states, are fundamentally bounded by the No-communication Theorem and the inherent stochasticity of wave-function collapse. Consequently, they operate under probabilistic constraints and suffer from physical bottlenecks such as decoherence and low capture efficiency. This paper proposes a deterministic, single-channel, full-duplex communication conjecture rooted in the Status-Relational Entropy (SRE) Dynamics framework, utilizing the open-ended Moebius relational state structure of light. By employing a highly coherent laser as the foundational causal resonance master source, macroscopic physical frequency is redefined as a joint bilateral information coupling density. Utilizing first-order closed-form solutions of the eigenspace and Random Matrix Theory (RMT) heuristic sieves, we construct a "Bidirectional Topological Flow Density Subtractor" algorithm. Theoretical derivations demonstrate that by co-modulating the topological configuration of electromagnetic crystals at both boundaries, deterministic full-duplex signaling can be achieved instantaneously within a single causal chain channel. This framework establishes a novel topological path toward high-efficiency, deterministic communication systems that transcend traditional probabilistic communication limits. Notice on Axiomatic Framework Alignment (SRE v1.5.1):To reconcile traditional relativistic and quantum-mechanical boundaries, all operational derivations and analytical boundaries established in this text - specifically regarding instantaneous full-duplex decoupling and single-photon statistical expectations - strictly inherit the non-Euclidean random-access indexing and causal logic depth lemmas formally proven in SRE Dynamics v1.5.1.
Yue Lu (Mon,) studied this question.