Carrier-Switching Theory: A Unified Framework for Quantum Coherence

The Carrier-Switching Theory introduces a phenomenological unifying framework for quantum coherence, where all coherent quantum interactions emerge from reversible switching of a formless energy-information packet between distinct physical carriers (photon modes, atomic excitations, spin waves, etc.). The framework is governed by a single universal Hamiltonian Ĥ_switch = Σ ħ g_ij (Ĉ_i† Ĉ_j + Ĉ_j† Ĉ_i), reproducing standard QED Rabi frequency and BCS Josephson current-phase relation exactly from first principles. Keywords: Carrier switching, quantum state transfer, universal Hamiltonian, quantum foundations, EIT, transduction, Bell inequality, quantum coherence, quantum networks