Markovian and non-Markovian dynamics of quantum coherence in the extended XX chain

The Markovian and non-Markovian dynamics of quantum coherence, including single-spin coherence, two -spin coherence, and its distribution (collective and localized coherence), are investigated in the XX spin chain with three-spin interaction. We find that the single-spin and localized coherence do not decrease but increase with time, which makes the dynamic evolution of the two-spin coherence more robust than entanglement and quantum discord. The three-spin interaction can lower the values of quantum coherence in Markovian evolution and heighten the oscillation frequency of quantum coherence in non-Markovian evolution because it can speed up the flow of coherence information. Finally, the trade-off relation between the collective and the localized coherence is clearly shown in their dynamic evolution. Thanks to the coherence trade-off, we find the substitution of localized coherence for collective coherence in dominating the dynamics of the two-spin coherence.

Automated summary

The Markovian and non-Markovian dynamics of quantum coherence are investigated in the XX spin chain with three-spin interaction. It is found that the single-spin and localized coherence increase with time. The three-spin interaction can lower the values of quantum coherence in Markovian evolution and heighten the oscillation frequency of quantum coherence in non-Markovian evolution.