Entanglement for all quantum states

被引：28

作者：

de la Torre, A. C. ^{[1
]}

Goyeneche, D. ^{[1
]}

Leitao, L. ^{[1
]}

机构：

[1] Univ Nacl Mar del Plata, Dept Fis, CONICET, IFIMAR, RA-7600 Mar Del Plata, Argentina

来源：

EUROPEAN JOURNAL OF PHYSICS | 2010年 / 31卷 / 02期

关键词：

TENSOR PRODUCT STRUCTURES;

D O I：

10.1088/0143-0807/31/2/010

中图分类号：

G40 [教育学];

学科分类号：

040101 ; 120403 ;

摘要：

It is shown that a state that is factorizable in the Hilbert space corresponding to some choice of degrees of freedom becomes entangled for a different choice of degrees of freedom. Therefore, entanglement is not a special case but is ubiquitous in quantum systems. Simple examples are calculated and a general proof is provided. The physical relevance of the change of tensor product structure is mentioned.

引用

页码：325 / 332

页数：8

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