Electronic quantum gates

Trapped ion quantum computers generally use pairs of laser beams that must be aligned to the position of individual ions to execute quantum gates. This requires alignment accuracy to a fraction of the width of a human hair. But imagine trying to align millions of laser beams with such incredible accuracy, while stabilising each one’s power, position and phase – in the knowledge that the slightest deviation would stop the quantum computer from working.

We use a much simpler electronic gate technology. Our quantum gates are executed by applying voltages to a microchip, similar to how classical transistors operate. We base our approach on the mature microwave technology used in today’s mobile phones.