The Cost of Erasing Information
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Landauer has argued that the process of erasing 1 bit of information requires a minimum amount of work equal to kT ln(2) where T is the temperature of a thermal reservoir that consumes the entropy of the bit. We show that, in principle, the thermal reservoir can be replaced by a reservoir of N spin-1/2 particles which is subject to the conservation of spin angular momentum. The cost of erasing 1 bit of information in this case is found to be in terms of the z component of spin angular momentum.
AIP Conference Proceedings
Copyright 2009 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal link for access to the definitive, published version.
Quantum Information, Computation and Communication