We briefly address Landauer’s Principle and some related issues in thermal demons. We show that an error-free Turing computer works in the zero-entropy limit, which proves Landauer’s derivation incorrect. To have a physical logic gate, memory or information-engine, a few essential components necessary for the operation of these devices are often neglected, such as various aspects of control, damping and the fluctuation–dissipation theorem. We also point out that bit erasure is typically not needed or used for the functioning of computers or engines (except for secure erasure).
Comments: 4 Pages. ￼Accepted paper at the International Conference on Noise and Fluctuations (ICNF 2015); to be published in its IEEE proceedings.
[v1] 2015-03-30 14:06:33
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