Orbital angular momentum from marginals of quadrature distributions
Orbital angular momentum from marginals of quadrature distributions
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DOI:
10.1103/physreva.88.053839
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发表时间:
2013-11-25
影响因子:
2.9
通讯作者:
Leuchs, G.
中科院分区:
文献类型:
--
作者:
Sanchez-Soto, L. L.;Klimov, A. B.;Leuchs, G.
We set forth a method to analyze the orbital angular momentum of a light field. Instead of using the canonical formalism for the conjugate pair angle-angular momentum, we model this latter variable by the superposition of two independent harmonic oscillators along two orthogonal axes. By describing each oscillator by a standard Wigner function, we derive, via a consistent change of variables, a comprehensive picture of the orbital angular momentum. We compare this with previous approaches and show how this method works in some relevant examples.