A quantum computer is like an orchestra of qubits, microscopic particles that can sound like 0 and 1 at the same time. The slightest tremor throws them off rhythm, generating errors. For the concert to happen, the conductor must deliver signals with jeweler's smoothness — any abrupt gesture destroys harmony. Faced with this challenge, scientists borrowed the iLQR method, originally developed for rocket landing and robot control.

This is how control pulses are born: they travel at the speed of light, and each curve is calculated to reduce entropy (a measure of chaos) to the limit. Tests on simple systems showed record accuracy — as if the orchestra played for the first time without a false note. And the smoothness of signals here is no less important than in spectroscopy, where the shape of the wave determines the unraveling of the secrets of matter.