Entanglement gauge and the non-Abelian geometric phase with two photonic qubits

被引：7

作者：

Marzlin, KP ^{[1
]}

Bartlett, SD

Sanders, BC

机构：

[1] Macquarie Univ, Dept Phys, Sydney, NSW 2109, Australia

[2] Macquarie Univ, Ctr Adv Comp Algorithms & Cryptog, Sydney, NSW 2109, Australia

[3] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

来源：

PHYSICAL REVIEW A | 2003年 / 67卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.67.022316

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We introduce the entanglement gauge describing the combined effects of local operations and nonlocal unitary transformations on bipartite quantum systems. The entanglement gauge exploits the invariance of nonlocal properties for bipartite systems under local (gauge) transformations. This new formalism yields observable effects arising from the gauge geometry of the bipartite system. In particular, we propose a non-Abelian gauge theory realized via two separated spatial modes of the quantized electromagnetic field manipulated by linear optics. In this linear optical realization, a bipartite state of two separated spatial modes can acquire a non-Abelian geometric phase.

引用

页数：9

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