ua nt - p h / 06 03 05 9 v 1 7 M ar 2 00 6 Entanglement Distribution and Entangling Power of Quantum Gates
نویسندگان
چکیده
Quantum gates, that play a fundamental role in quantum computation and other quantum information processes, are unitary evolution operatorsˆU that act on a composite system changing its entanglement. In the present contribution we study some aspects of these entanglement changes. By recourse of a Monte Carlo procedure, we compute the so called " entangling power " for several paradigmatic quantum gates and discuss results concerning the action of the CNOT gate. We pay special attention to the distribution of entanglement among the several parties involved.
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