Erase Entangled Memory To Cool A Computer.
Who needs law when you have quantum computer?
Imagine cooling a supercomputer not with fans or freezers, but by deleting some of its memory
. New calculations show that this is possible, provided some of the bits that make up the computer's memory are "entangled"– a spooky property that can link two quantum systems, no matter how far apart they sit in physical space.
The heat produced by a computer today is mainly due to processing inefficiencies, and while these can be reduced, Landauer's insight implies a fundamental limit on how much you can reduce the heat generated by computing.
Now, Lídia del Rio of the Swiss Federal Institute of Technology in Zurich and colleagues have shown that quantum entanglement provides a way to sneak around Landauer's law.
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