Effect of temperature on non-Markovian dynamics in Coulomb crystals

Abstract

In this paper we generalize the results reported in Phys. Rev. A 88, 010101 (2013) and investigate the flow of information induced in a Coulomb crystal in presence of thermal noise. For several temperatures we calculate the non-Markovian character of Ramsey interferometry of a single 1/2 spin with the motional degrees of freedom of the whole chain. These results give a more realistic picture of the interplay between temperature, non-Markovianity and criticality.

5 pages, 3 figures. Accepted for publication in Special Issue of the International Journal of Quantum Information devoted to IQIS2013 conference