With their potential to perform calculations far beyond the reach of conventional supercomputers, machines harnessing certain quantum physics phenomena are expected to change the way the world solves complex problems. They will help scientists develop more efficient solar cells and more effective drugs, and even have an impact on artificial intelligence. This is because unlike today’s computers that work by manipulating binary bits existing in one of two states, a 0 or a 1, quantum computers use qubits, or quantum bits. These represent a state of an atom or elementary particle (such as the spin) with an ability to store multiple values at once, a phenomenon known as superposition.
Source:
https://phys.org/news/2019-07-fun-atoms.html