He is also credited with laying down some of the technological foundations (a number of novel semiconductor devices and fabrication techniques) for making practical Quantum computing possible.
One completion of his PhD, he was appointed as a postdoctoral research fellow at the Brown University with his advisor the well-known statistical physicist Leo Kadanoff.
This was an important discovery and it resulted into revolutionary advancements in the millimeter and submillimeter astronomy through the development of "Superconductor-Insulator-Superconductor (SIS)" receivers operating at around the fundamental limit for sensitivity (As restricted by the Heisenberg Uncertainty principle).
His predictions allowed others to build the hardware that helped dramatically change our understanding of the universe.”[3] Other than his theoretical pursuits, Tucker initiated atom-scale STM e-beam Lithography (as based on selective desorption of hydrogen from H-passivated silicon surfaces in ultra-high vacuum, with Dr. T.-C. Shen (1992–98)), as well as suggested techniques like gate-induced tunneling (field emission) as a new way for fabricating Metal Silicide Source/Drain MOS transistors.
[5] In parallel to his groundbreaking work on tunneling junctions and the Tucker theory, he demonstrated an avid interest in the theoretical and practical development of quantum computers.