J. Phys. A |
Volume 16 Pages 2161-71 |
1983 |
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,
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