Necessary and sufficient conditions for the entanglement sudden death under amplitude damping and phase damping
Jie-Hui Huang, Shi-Yao Zhu · Physical Review A · 2007
By using principal minor method, which is developed from the Peres-Horodecki criterion for the separability of a quantum state, we derive the necessary and sufficient conditions for the entanglement sudden death of a two-qubit state under amplitude damping and phase damping.