Pritam Chattopadhyay

Researchers have shown that if the heat and cold sources in a quantum maser (microwave amplifier) race along at nearly the speed of light, this engine circumvents the classical efficiency limit. Moreover, it can operate even without a temperature difference—the motion itself serves as fuel.

Waiting for thermal equilibrium is no longer necessary: physicists have found a way to use the excited state of a quantum probe for ultra-precise, instantaneous measurements. The principle resembles the sizzling of droplets on a skillet: a brief signal provides a rapid assessment. The discovery acce