Measurement of the Spiral Spectrum of Entangled Two-Photon States

被引：96

作者：

Pires, H. Di Lorenzo ^{[1
]}

Florijn, H. C. B. ^{[1
]}

van Exter, M. P. ^{[1
]}

机构：

[1] Leiden Univ, Huygens Lab, NL-2300 RA Leiden, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 02期

关键词：

PARAMETRIC DOWN-CONVERSION; INTRINSIC ANGULAR-MOMENTUM; PHOTONS;

D O I：

10.1103/PhysRevLett.104.020505

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We implement an interferometric method to measure the orbital angular momentum (OAM) spectrum of photon pairs generated by spontaneous parametric down-conversion. In contrast with previous experiments, which were all limited by the modal capacity of the detection system, our method operates on the entire down-conversion cone and reveals the complete distribution of the generated OAM. In this geometry, new features can be studied. We show that the phase-matching conditions can be used as a tool to enhance the azimuthal Schmidt number and to flatten the spectral profile, allowing the efficient production of high-quality multidimensional entangled states.

引用

页数：4

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