Distant time crystals can somehow fall into the same rhythm

Researchers have shown that multiple time crystals inside a semiconductor can synchronize their oscillations, much like pendulum clocks gradually falling into the same rhythm. The coupling is carried by spin-polarized electrons, allowing time crystals separated by up to 40 micrometers to lock to a common frequency. The discovery reveals surprisingly long-range connections between these exotic spin systems and could help researchers develop future spin-based devices.

Distant time crystals can somehow fall into the same rhythm. Distant time crystals can somehow fall into the same rhythm Science News from research organizations Distant time crystals can somehow fall into the same rhythm Physicists have discovered that separate time crystals can synchronize across surprisingly large distances inside a semiconductor. Com Physicists at TU Dortmund University showed in January 2024 that a continuous time crystal could persist inside a semiconductor, with its oscillations remaining stable for hours.

Now, in a new study published in Nature Communications, Prof. Alex Greilich and his colleagues have found that multiple time crystals can emerge within the same material and synchronize their electron-nuclear spin oscillations. Time crystals are unusual physical systems whose internal behavior repeats in a regular rhythm over time, even though they are not being driven by a repeating external signal.

In the TU Dortmund experiments, the time crystals form inside a semiconductor made from gallium arsenide with small amounts of indium and silicon.