Optimal creation of entanglement using a two-qubit gate

B. Kraus, J. I. Cirac

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We consider a general unitary operator acting on two qubits in a product state. We find the conditions such that the state of the qubits after the action is as entangled as possible. We also consider the possibility of using ancilla qubits to increase the entanglement.

Original languageEnglish
Pages (from-to)8
Number of pages1
JournalPhysical Review A
Issue number6
StatePublished - 2001
Externally publishedYes


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