Scientists around the world are racing to turn quantum computing theory into a practical reality that could transform countless industries with computing grunt faster than we've ever imagined.

But nobody has yet managed to build a quantum computing circuit of useful scale because of the impracticability and expense of resources needed.

A quantum Fredkin gate. Credit:Science Advances

Researchers from Griffith University and the University of Queensland have brought us one step closer after they discovered a way to make the building blocks of quantum computing, quantum logic gates, bigger.

If bigger in size, fewer logic gates will be needed to construct a quantum circuit, bringing down the cost and complexity of manufacture.