Temporal Phase-Aware Scheduling and Correction for Variational Quantum Algorithms: Mitigating Diurnal Noise Contributions to Gradient Degradation

This version 3.0 is a major revision that: Clarifies that the fundamental barren plateau is NOT solved Presents results as numerical simulations (not experimental data) Provides explicit conditions for benefit (A ≥ 0.5%) Includes comprehensive sensitivity analysis Documents all limitations Key results (SIMULATED): Scheduling improvement: 5.0× HS° correction improvement: 4.4× Correction recovers 87% of scheduling benefit IMPORTANT: Experimental validation on real hardware is required. Keywords :variational quantum algorithms, barren plateau, noise mitigation,temporal scheduling, phase correction, NISQ, VQE, quantum error