What question did this study set out to answer?

The paper aims to explore the entanglement properties of two qubits in nonorthogonal pure states using linear entropy as a measure.

May 4, 2026Open Access

Bipartite entanglement through nonorthogonal pure states

Key Points

The paper aims to explore the entanglement properties of two qubits in nonorthogonal pure states using linear entropy as a measure.
Analyzed bipartite entanglement using linear entropy.
Studied the relationship between this measure and Su(2)-coherent states theory.
Reformulated entanglement measure based on new parameters for coherent states.
Identified conditions for both maximal and minimal entanglement in nonorthogonal states.
Provided a functional relationship involving the amplitudes of spin coherent states.

Abstract

The purpose of this conference paper is to investigate the entanglement of a more general type of two qubitsnonorthogonal pure state by using the linear entropy as a measure of the degree of bipartite entangle-ment. Moreover, we study the behaviour of this entanglement measure in the context of Su(2)-coherentstates theory and we reformulate it as a function of some new parameters that specify coherent states.Finally we find some conditions for maximal and minimal entanglement of nonorthogonal states interms of the amplitudes of spin coherent states

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