Polynomial method to study the entanglement of pure N-qubit states

Details Polynomial method to study the entanglement of pure N-qubit states Polynomial method to study the entanglement of pure N-qubit states

2009-08-12

arxiv.org/abs/0908.1727v2

Phys. Rev. A 81, 012326 (2010)

Physics

Quantum Physics

7 pages. Extensively revised and shortened

Scientific paper

We present a mapping which associates pure N-qubit states with a polynomial.
The roots of the polynomial characterize the state completely. Using the
properties of the polynomial we construct a way to determine the separability
and the number of unentangled qubits of pure N-qubit states.

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