Thermodynamic cost of reversible computing
Reversible computing requires preservation of all information throughout the entire computational process; this implies that all errors that appear as a result of the interaction of the information-carrying system with uncontrolled degrees of freedom must be corrected. But this can only be done at t...
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| Published in | Physical review letters Vol. 99; no. 11; p. 110502 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
14.09.2007
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| Online Access | Get more information |
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| Summary: | Reversible computing requires preservation of all information throughout the entire computational process; this implies that all errors that appear as a result of the interaction of the information-carrying system with uncontrolled degrees of freedom must be corrected. But this can only be done at the expense of an increase in the entropy of the environment corresponding to the dissipation, in the form of heat, of the "noisy" part of the system's energy. This Letter gives an expression of that energy in terms of the effective noise temperature, and analyzes the relationship between the energy dissipation rate and the rate of computation. Finally, a generalized Clausius principle based on the concept of effective temperature is presented. |
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| ISSN: | 0031-9007 |
| DOI: | 10.1103/PhysRevLett.99.110502 |