Century-old quantum mechanics can explain how a single sub-atomic particle cross the energy barrier through tunnelling, be located at multiple places simultaneously, occupies discrete energy levels and emits energy in quanta as it moves from higher energy level to lower energy level. Three US Physics Professors; were awarded this year's Physics Nobel Prize. Quantum mechanics has advanced from single particle to macroscopic level, and during 1984 and 1985 these Professors have conducted experiments wherein quantum behavior has been observed at the macroscopic level, where billions and trillions of Cooper particles (two-electron closed system) are involved. The Professors had discovered macroscopic mechanical tunneling and quantized energy level in a system large enough to be kept in hand. The quantum behavior in superconducting circuits has led to the creation of superconducting qubits, the building blocks of quantum computers and can perform intricate calculations far beyond the reach of a classical computer, marking the dawn of a new computational era. Google Sycamore processor, co-developed by martinis has already demonstrated quantum supremacy by solving problems faster than any existing supercomputer. The implications extend far beyond computing. When they made this discovery in 1984 and 1985, Martinis was a PhD candidate, Devoret was a postdoctoral fellow, and Clarke was their professor and supervisor. Two of the three Laureates have links with Google.