Quantum spiral bandwidth of entangled two-photon states

被引：201

作者：

Torres, JP ^{[1
]}

Alexandrescu, A

Torner, L

机构：

[1] Univ Politecn Cataluna, ICFO, ES-08034 Barcelona, Spain

[2] Univ Politecn Cataluna, Dept Signal Theory & Commun, ES-08034 Barcelona, Spain

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.68.050301

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We put forward the concept of quantum spiral bandwidth of the spatial mode function of the two-photon entangled state generated in spontaneous parametric down-conversion. We obtain the bandwidth using the eigenstates of the orbital angular momentum of the biphoton states, and reveal its dependence with the length of the down-converting crystals and waist of the pump beam. The connection between the quantum spiral bandwidth and the entropy of entanglement of the quantum state is discussed.

引用

页数：4

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