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We propose an entropy-asymmetric signaling mechanism within a compressible space-time fluid framework, where photons, as entropy-neutral carriers, traverse entropy-controlled tunnels analogous to wormholes. These tunnels enable coherent phase information transfer from high-entropy (future-like) to low-entropy (past-like) domains, preserving thermodynamic causality. Using Bose–Einstein condensate (BEC) analogs, we outline a laboratory setup to simulate these effects, offering a testable framework. Applications include predictive communication, entropy-separated computation, and foundational tests of space-time thermodynamics.