Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Markovian qubit dynamics induced by Coulomb crystals   We investigate the back-flow of information in a system with a second-order
structural phase transition, namely a quasi one-dimensional Coulomb crystal.
Using standard Ramsey interferometry which couples a target ion (the system) to
the rest of the chain (a phononic environment), we study the non-Markovian
character of the resulting open system dynamics. We study two different
time-scales and show that the back-flow of information pinpoints both the phase
transition and different dynamical features of the chain as it approaches
criticality. We also establish an exact link between the back-flow of
information and the Ramsey fringe visibility.

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The categories of this paper are: physics
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The categories of this paper are: cond-mat
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The categories of this paper are: cs
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: math
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org