Abstract
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.
- Received 6 August 2007
DOI:https://doi.org/10.1103/PhysRevA.76.062322
©2007 American Physical Society