Information erasure without an energy cost

Vaccaro, Joan A. and Barnett, Stephen M. (2011) Information erasure without an energy cost. Proceedings A: Mathematical, Physical and Engineering Sciences, 467 (2130). pp. 1770-1778. ISSN 1471-2962

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    Abstract

    Landauer argued that the process of erasing the information stored in a memory device incurs an energy cost in the form of a minimum amount of mechanical work. We find, however, that this energy cost can be reduced to zero by paying a cost in angular momentum or any other conserved quantity. Erasing the memory of Maxwell's demon in this way implies that work can be extracted from a single thermal reservoir at a cost of angular momentum and an increase in total entropy. The implications of this for the second law of thermodynamics are assessed.

    • Item type:Article
      ID code:31065
      Dates:
      Date
      Event
      8 June 2011
      Published
      Keywords:information erasure, thermodynamics, canonical ensemble, spin system, Physics, Physics and Astronomy(all), Engineering(all), Mathematics(all)
      Subjects:Science > Physics
      Department:Faculty of Science > Physics
      Depositing user: Pure Administrator
      Date deposited:16 May 2011 10:29
      Last modified:10 Jun 2021 00:42
      Related URLs:
      URI:https://strathprints.strath.ac.uk/id/eprint/31065
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