Revival and robustness of Bures distance discord under decoherence channels

• Bures distance discord is more robust against decoherence than entanglement.
• Bures distance discord revives after a dark point of time, while entanglement damps to death.
• The initial condition enables Bures distance discord to damp smoothly, but it speeds up the death of entanglement.
• A geometric interpretation concerning these phenomena has been provided.

In this paper, we demonstrate the revival and robustness of Bures distance discord in comparison with entanglement under local decoherent evolutions. The results show that in depolarizing channel Bures distance discord revives after a dark point of time, while entanglement will damp into death without revival. In addition, in hybrid channel the declining initial condition can enable Bures distance discord to decay more smoothly within a limited time, but speed up the death of entanglement. In this sense, Bures distance discord is typically more robust against decoherence than entanglement. Furthermore, we also provide a geometric interpretation concerning these phenomena.