Google hails breakthrough as quantum computer surpasses ability of supercomputers

Algorithm performed task beyond capability of classical computers, although experts say real-world application still years away

Google has claimed a breakthrough in quantum computing after developing an algorithm that performed a task beyond the capabilities of conventional computers.

The algorithm, a set of instructions guiding the operation of a quantum computer, was able to compute the structure of a molecule - which paves the way for major discoveries in areas such as medicine and materials science.