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Operator entanglement of two-qubit joint unitary operations revisited: Schmidt number approach

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arxiv 1204.0996 v1 pith:EZR46GNN submitted 2012-04-04 quant-ph

Operator entanglement of two-qubit joint unitary operations revisited: Schmidt number approach

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keywords unitaryentanglementoperatortwo-qubitnumberschmidtjointmeasure
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Operator entanglement of two-qubit joint unitary operations is revisited. Schmidt number is an important attribute of a two-qubit unitary operation, and may have connection with the entanglement measure of the unitary operator. We found the entanglement measure of two-qubit unitary operators is classified by the Schmidt number of the unitary operators. The exact relation between the operator entanglement and the parameters of the unitary operator is clarified too.

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