Beyond Landauer Erasure

Entropy

Stephen M. Barnett¹ 

[1] School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UK; E-Mail:

关键词: thermodynamics;    information erasure;    maximum entropy principle;    spin reservoir;   

DOI  :  10.3390/e15114956

来源: mdpi

【 摘 要 】

In thermodynamics, one considers thermal systems and the maximization of entropy subject to the conservation of energy. A consequence is Landauer’s erasure principle, which states that the erasure of one bit of information requires a minimum energy cost equal to , where λ is related to the average value of the conserved quantity. The costs of erasure depend, fundamentally, on both the nature of the physical memory element and the reservoir with which it is coupled.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.