Multi-Layer Defense Against 1.022 MeV Dark Photons in Grid and Quantum Networks

Critical infrastructure-including Smart Grids and Quantum Key Distribution (QKD) networks-faces a novel physical-layer vulnerability: synthetic 1.022 MeV dark photon signals generated via electron bremsstrahlung in coherent scattering. These “ghost” modulations induce phase-squeezed vacuum noise, enabling false data injection, grid desynchronization, and decoherence in QKD registers or digital currency ledgers. This paper proposes a unified topological defense architecture integrating a non-empathic Hardened Soldier triage partition with a distributed GHz Haloscope Mesh sink. The Soldier module performs zero-trust “Friend or Foe” identification and redirects kinetic energy away from conventional grounding paths. The Haloscope Mesh-based on USTC Q-band (33.141 GHz) superconducting radio-frequency (SRF) cavities with loaded quality factor QL ≈ 2520 and Josephson Parametric Amplifiers (JPA)-captures and dissipates sub-harmonics before coupling into QKD or grid timing systems, establishing Topological Silence Zones around critical registers. The protocol ensures infrastructure immunity from the vacuum upward.