This paper by George and Handel, published in International Journal of Modern Physics B, develops the quantum 1/f effect based on quantum information theory. The work establishes rigorous connections between information-theoretic quantities such as von Neumann entropy, mutual information, and quantum entanglement, and the fundamental origins of 1/f noise in physical systems, providing a new theoretical framework that unifies quantum measurement theory, decoherence processes, and low-frequency noise phenomena in quantum and classical devices.