Maxwell's Demon Can Extract Energy From Hidden Memories, Study Finds

A new study reveals that Maxwell's demon, a famous thought experiment in physics, can extract energy not just from temperature differences but from hidden memories stored in a system. The research, conducted by scientists at the University of Maryland, shows that information about past states can be converted into work, challenging traditional views of thermodynamics. The team, led by physicist Christopher Jarzynski, demonstrated that a demon with access to certain memory states could exploit them to reduce entropy and gain energy. This finding has implications for the foundations of statistical mechanics and the role of information in physical processes. It suggests that memory itself can be a resource, blurring the line between information and energy. The study opens new avenues for exploring the thermodynamics of computation and the limits of energy extraction in microscopic systems. It may also inform the design of more efficient nanoscale devices.