J. Phys. A

Volume 16  Pages 2161-71


Quantum Limits to the Flow of Information and Entropy


JB Pendry


The quantum limits to information flow are explored developing the central concept of a medium comprising several channels through which the information flows. In each channel there is an inequality between information flow  and energy flow ,

a relationship which, though speculated on before or derived for only a restricted class of systems, is proven here for a wide range of systems. Applications are made to the energy cost of computing and to the maximum rate of cooling, , which in any one channel is,


This paper is available as a PDF file.

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