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

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

Tab. 6 Correlation coefficients for $n$ times quantum operations:two independent local phase-flip channels (${\rm PF}^{n}$-${\rm PF}^{n}$), two independent local bit-flip channels (${\rm BF}^{n}$-${\rm BF}^{n}$), two independent local bit-phase-flip channels (${\rm BPF}^{n}$-${\rm BPF}^{n}$), 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.