TY  - JOUR
AU  - Toyabe, Shoichi
AU  - Sagawa, Takahiro
AU  - Ueda, Masahito
AU  - Muneyuki, Eiro
AU  - Sano, Masaki
PY  - 2010
DA  - 2010//
TI  - Experimental demonstration of information-to-energy conversion and validation of the generalized Jarzynski equality
T2  - Nat. Phys.
JO  - Nature Physics
SP  - 988
EP  - 992
VL  - 6
IS  - 12
KW  - fromIPMRAS
AB  - In 1929, Leo Szilard invented a feedback protocol in which a hypothetical intelligence called Maxwell's demon pumps heat from an isothermal environment and transduces it to work. After an intense controversy that lasted over eighty years; it was finally clarified that the demon's role does not contradict the second law of thermodynamics, implying that we can convert information to free energy in principle. Nevertheless, experimental demonstration of this information-to-energy conversion has been elusive. Here, we demonstrate that a nonequilibrium feedback manipulation of a Brownian particle based on information about its location achieves a Szilard-type information-energy conversion. Under real-time feedback control, the particle climbs up a spiral-stairs-like potential exerted by an electric field and obtains free energy larger than the amount of work performed on it. This enables us to verify the generalized Jarzynski equality, or a new fundamental principle of "information-heat engine" which converts information to energy by feedback control.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=831), last updated on Wed, 13 Jun 2012 18:55:57 -0500
ID  - Toyabe_etal2010
ER  -