Dynamics of Quantum Coherence in Bell-Diagonal States under Markovian Channels

Yao-Kun Wang,Shao-Ming Fei,Zhi-Xi Wang

Tab. 7 Kraus operators for two-qubit sysems under two different local Markovian channels: a bit-flip channel and a phase-flip channel (BF-PF), a bit-flip channel and a bit-phase-flip channel(BF-BPF), a phase-flip channel and a bit-phase-flip channel (PF-BPF),where $p=1-\text{exp}(-\gamma t)$, $q=1-\text{exp}(-\gamma't)$, and $\gamma$ and $\gamma'$ are the phase damping rates for the channels on qubits $A$ and $B$, respectively.