Information-driven current in a quantum Maxwell demon

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PhysRevE.88.062128.pdf (819 KB)

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https://journals.aps.org/pre/abstract/10.1103/PhysRevE.88.062128

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https://doi.org/10.1103/PhysRevE.88.062128
 http://hdl.handle.net/11603/19407

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UMBC Physics Department
UMBC Joint Center for Earth Systems Technology (JCET)

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2013-12-16

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journal articles
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Sebastian Deffner, Information-driven current in a quantum Maxwell demon, Phys. Rev. E 88, 062128 (2013), DOI:https://doi.org/10.1103/PhysRevE.88.062128

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©2013 American Physical Society

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Abstract

We describe a minimal model of a quantum Maxwell demon obeying Hamiltonian dynamics. The model is solved exactly, and we analyze its steady-state behavior. We find that writing information to a quantum memory induces a probability current through the demon, which is the quantum analog of the classical Maxwell demon's action. Our model offers a simple and pedagogical paradigm for investigating the thermodynamics of quantum information processing.