Measuring the orbital angular momentum of a single photon

被引:940
作者
Leach, J [1 ]
Padgett, MJ
Barnett, SM
Franke-Arnold, S
Courtial, J
机构
[1] Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland
[2] Univ Strathclyde, Dept Phys & Appl Phys, Glasgow, Lanark, Scotland
关键词
D O I
10.1103/PhysRevLett.88.257901
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We propose an interferometric method for measuring the orbital angular momentum of single photons. We demonstrate its viability by sorting four different orbital angular momentum states, and are thus able to encode two bits of information on a single photon. This new approach has implications for entanglement experiments, quantum cryptography and high density information transfer.
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页数:4
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