The energy cost of quantum information losses

Alejandro Romanelli, Franklin de Lima Marquezino, Renato Portugal and Raul Donangelo

Physica A: Statistical Mechanics and its Applications, 2018, vol. 497, issue C, 1-8

Abstract: We explore the energy cost of the information loss resulting from the passage of an initial density operator to a reduced one. We use the concept of entanglement temperature in order to obtain a lower bound for the energy change associated with this operation. We determine the minimal energy required for the case of the information losses associated with the trace over the space coordinates of a two-dimensional quantum walk.

Keywords: Entanglement temperature; Araki–Lieb inequality; Quantum walk (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:497:y:2018:i:c:p:1-8

DOI: 10.1016/j.physa.2018.01.015

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