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By calculating entanglement measures and quantum violation of Bell-typeinequality, we reveal the relationship between entanglement measure and theamount of quantum violation for a family of four-qubit entangled states. It hasbeen demonstrated that the Bell-type inequality is completely violated by thesefour-qubit entangled states. The plot of entanglement measure as a function ofthe expectation value of Bell operator shows that entanglement measure firstdecreases and then increases smoothly with increasing quantum violation.

Entanglement measure and quantum violation of Bell-type inequality for a family of four-qubit entangled states