Maxwell's Demon, Szilard's Engine and Quantum Measurements

Details Maxwell's Demon, Szilard's Engine and Quantum Measurements Maxwell's Demon, Szilard's Engine and Quantum Measurements

2003-01-15

arxiv.org/abs/quant-ph/0301076v1

Physics

Quantum Physics

9 pages, 1 figure

Scientific paper

We propose and analyze a quantum version of Szilard's ``one-molecule
engine.'' In particular, we recover, in the quantum context, Szilard's
conclusion concerning the free energy ``cost'' of measurements: $\Delta F \geq
k_B T\ln2$ per bit of information.

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