Researchers have demonstrated a way to maintain an unstable quantum system by applying bursts of microwave radiation. The technique is comparable to methods used for controlling an inverted pendulum ...

Imagine balancing a ruler vertically in the palm of your hand: you have to constantly pay attention to the angle of the ruler ...

(a) The controller uses Parallel Distributed Compensator (PDC) as the control stratergy and Linear Matrix Inequality (LMI)-based stability conditions to achieve ...