Quantum effects improve the energy efficiency of feedback control
Jordan M. Horowitz1 and Kurt Jacobs1,2
1Department of Physics, University of Massachusetts at Boston, Boston, MA 02125, USA and
2Hearne Institute for Theoretical Physics, Louisiana State University, Baton Rouge, LA 70803, USA
The laws of thermodynamics apply equally well to quantum systems as to classical systems,
and because of this quantum effects do not change the fundamental thermodynamic efficiency of
isothermal refrigerators or engines. We show that, despite this fact, quantum mechanics permits
measurement-based feedback control protocols that are more thermodynamically efficient than their
classical counterparts. As part of our analysis we perform a detailed accounting of the thermodynamics
of unitary feedback control and elucidate the sources of inefficiency in measurement-based
and coherent feedback.
PACS numbers: 05.30.-d, 05.70.Ln, 03.67.-a, 03.65.Ta
Untuk mengetahui lebih jauh tentang kelanjutan artikel ini klik link dibawah ini :
http://arxiv.org/pdf/1311.2920.pdf
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