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

被引：15
|
作者：
Makela, H. [1 ]
Messina, A. [1 ]
机构：
[1] Univ Palermo, Dipartimento Sci Fis & Astron, I-90123 Palermo, Italy
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 01期
关键词：
SEPARABILITY CRITERION; SUFFICIENT CONDITIONS; MIXED STATES; QUANTUM;
D O I：
10.1103/PhysRevA.81.012326
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
引用
收藏
页数：6
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