Scientists show how to erase information without using energy
Tuesday, January 25, 2011 - 11:00
in Physics & Chemistry
(PhysOrg.com) -- Until now, scientists have thought that the process of erasing information requires energy. But a new study shows that, theoretically, information can be erased without using any energy at all. Instead, the cost of erasure can be paid in terms of another conserved quantity, such as spin angular momentum.