Transverse-mode beam splitter of a light beam and its application to quantum cryptography

被引：82

作者：

Sasada, H ^{[1
]}

Okamoto, M ^{[1
]}

机构：

[1] Keio Univ, Fac Sci & Technol, Dept Phys, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.68.012323

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have theoretically and experimentally studied how a Mach-Zehnder interferometer with an additional mirror transforms a light beam composed of the second lowest transverse modes, HG(10), HG(01), LG(01), and LG(0-1) (HG denotes Hermite-Gaussian mode; LG denotes Laguerre-Gaussian mode). In certain conditions, the interferometer divides the incident beam into the HG(10) and HG(01) components as a transverse-mode beam splitter. We propose a practical device involving the two interferometers for quantum cryptography, in which a photon carries two bits corresponding to the polarization and the transverse mode.

引用

页数：7

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