Two-qubit catalysis in a four-state pure bipartite system

Details Two-qubit catalysis in a four-state pure bipartite system Two-qubit catalysis in a four-state pure bipartite system

2001-02-12

arxiv.org/abs/quant-ph/0102067v1

Physics

Quantum Physics

Scientific paper

We consider a four-state pure bipartite system consisting of four qubits
shared among two parties using the same Schmidt basis, two qubits per party. In
some cases, transformation between two known pure states may not be possible
using LOCC transformations but may be possible with the addition of a two-qubit
catalyst. We provide a necessary and sufficient condition for this to occur.

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