Computers built with quantum technology (a quantum computer) may fundamentally change what a computer may be able to accomplish. Many problems are so complicated that even the fastest supercomputer would currently take millions of years to provide an answer. Optimising financial transactions, machine learning, creating new medicines, understand protein folding and breaking codes are just some of the problems where the existence of a quantum computer could change everything. The challenge to build a uni-versal quantum computer has been described as difficult as manned space travel to Mars. By inventing a new method where voltages are applied to a quantum computer microchip, Professor Winfried Hensinger and his team have managed to remove one of the biggest barriers traditionally faced to build a large-scale quantum computer - having to precisely align billions of lasers to carry out quantum gate operations. More recently, his group unveiled the first in-dustrial blueprint on how to build a large-scale quantum computer. Prof Hensinger will explain both challenges and opportunities in developing practical quantum computers.