Quantum memory as a perpetuum mobile of the second kind

Details Quantum memory as a perpetuum mobile of the second kind Quantum memory as a perpetuum mobile of the second kind

2009-01-07

arxiv.org/abs/0901.0811v4

Physics

Quantum Physics

15 pages,1 figure, amended text

Scientific paper

It is argued that a scalable quantum memory could be used as a perpetuum mobile of the second kind and hence cannot be realized in Nature. The reasoning is based on the assumption that the Landauer's principle for measurements is a consequence of the second law of thermodynamics and not an independent postulate. This implies a modification of the Landauer's principle when applied for discrimination of equilibrium states. In Appendices I,II the entropy, heat and work balance for open systems is discussed. In Appendix III a model of measurement violating the standard formulation of Landauer's principle is presented.

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