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Purification of two-qubit mixed states (2002).
| Content Provider | CiteSeerX |
|---|---|
| Author | Enric Jan É |
| Abstract | We find the necessary and sufficient condition under which two two-qubit mixed states can be purified into a pure maximally entangled state by local operations and classical communication. The optimal protocol for such transformation is obtained. This result leads to a necessary and sufficient condition for the exact purification of n copies of a two-qubit state. Quantum entanglement is regarded as one of the basic resources in the field of quantum information theory. It is the essential ingredient for tasks as quantum dense coding [1] and quantum teleportation [2]. In general these tasks require maximally entangled states, among which the Bell state |
| File Format | |
| Publisher Date | 2002-01-01 |
| Access Restriction | Open |
| Subject Keyword | Two-qubit Mixed State Sufficient Condition Exact Purification Classical Communication Quantum Entanglement Local Operation Optimal Protocol Essential Ingredient Basic Resource Entangled State Bell State Quantum Teleportation Two-qubit State Quantum Information Theory Quantum Dense |
| Content Type | Text |
