Quantum entanglement is well-understood in a two-qubit system. Concurrence is a scalar quantity that measures the degree of entanglement between two qubits. For higher dimensional systems, however, there has yet to be an established entanglement measure. This talk will attempt to generalize the idea of concurrence to qutrit, qudit, and multi-partite systems. In a three-qubit system, we evaluate a measure proposed by Wooters, known as the three-tangle, and compare it to an entanglement triangle as outlined in papers by Sakurai–Spannowsky and Xie and Eberly. We propose an expansion of the entanglement triangle to a 4 qubit system by considering a tetrahedral volume, and discuss the implications of this theory as a candidate for measuring GME (genuine multipartite entanglement).
Melinda Yuan, PhD Student, Northwestern University
Host: Ian Low
Joan West
(847) 491-3645
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