Atomic String and Harmony of Frequencies ⚡ экспресс
Scientists have created a new type of ‘atomic clock’ where cesium atoms, illuminated by a laser, start pulsing by themselves, like an orchestra playing in rhythm. By adding radio waves, they learned to change the rhythm and observe musical effects—from frequency capture to the appearance of a comb of new frequencies. This will help understand synchronization in the quantum world. What else can we make dance in unison?
A cloud of cesium atoms was made to behave like a single quantum string. By shining a laser and letting the particles interact, scientists launched self-sustaining oscillations — a rhythm emerged without an external conductor.
Radio waves acted like frets on a fingerboard: it was possible to smoothly vary the sounding frequency. And under powerful influence, the string gave birth to overtones — a multitude of equally spaced frequencies appeared, resembling the teeth of a comb. Such a frequency comb is a key tool for ultra-precise clocks.
Detailed analysis of the glow (spectroscopy) and precise measurement of its brightness (photometry) allowed building a simple model, similar to a classical oscillator. It explained the behavior of the quantum string and opened the way to creating controllable quantum simulators — platforms for studying collective rhythms in the microworld.
🎯 A guitar string also produces more than one sound: the fundamental tone is surrounded by overtones with multiple frequencies — a natural frequency comb.
🎬 Perhaps one day such quantum strings will sing the most complex symphonies, controlled by a single beam of light.