Measures of Quantum Entanglement
A quantum system consisting of two or more subsystems is said to exhibit entanglement if the wave function (or density operator) of the system cannot be written as a product of wave functions (or density operators) of the component subsystems. The purpose of this work is to introduce several different measures of entanglement and to explore to what extent they agree with each other. This work is concerned largely with systems consisting of just two subsystems, although extensions to more than two subsystems are briefy considered.
KeywordsWave Function Entangle State Pure State Entropic Entanglement Density Operator
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