Relation between the usual and the entanglement temperature, in a simple quantum system

Alejandro Romanelli, Raul Donangelo and Andrés Vallejo

Physica A: Statistical Mechanics and its Applications, 2015, vol. 437, issue C, 471-478

Abstract: We develop a thermodynamical theory to describe the behavior of the entanglement between a single two-level atom with a single mode of the electromagnetic field. The resonant Jaynes–Cummings model is used to study both the entanglement thermodynamics, in particular the entanglement temperature, and its connection with the average number of photons in the optical cavity. We find that this entanglement temperature has a strong dependence with the initial conditions of the atom. We show that the entanglement temperature between the photons and the atom defined in this work is the same temperature obtained within the Jaynes–Cummings model at finite temperature developed in the Thermo-Field Dynamics formalism.

Keywords: Quantum computation; Quantum information (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:437:y:2015:i:c:p:471-478

DOI: 10.1016/j.physa.2015.06.009

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