Study reveals a lower limit in the time taken for information to be shared between quantum states. Credit: Amit Vikram

Theoretical physicists in the US have discovered a "speed limit" on the time taken for quantum information to spread through larger systems. Publishing their results in Physical Review Letters , Amit Vikram and colleagues at the University of Maryland have proved for the first time that this minimum time is closely linked with a system's entropy and temperature, perhaps paving the way for a deeper understanding of quantum information across a wide range of physical settings.

Sharing information

In 1974, Stephen Hawking proposed for the first time that black holes aren't entirely black.…