In the quantum world, light and matter constantly exchange energy. Previously, they were described statically, like frozen poses. The new approach follows the dance itself: the transitions between states, like a continuous sequence of movements. Each such transition is a step, and their series gives rise to a complex dance, such as the absorption of multiple photons at once. Diagrams of this dance, similar to Richard Feynman's route maps, help keep the rhythm.
The method was applied to a model of an atom in a mirror trap, like a dancer in a hall of mirrors. It turned out: even if the rhythms of the atom and light don't match, they hold hands, creating a shared sway. The frequency of this common rhythm doesn't depend on the number of photons, uniting cases that were previously considered different. Such universality opens simple ways to control quantum dances — from ultra-precise clocks to hack-proof data transmission.
Despite its simplicity, the model accurately describes real superconducting qubits, the foundation of quantum processors.