arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1505.04992physics.opticsquant-ph
收藏

关于自旋和轨道光流螺旋度分解的注记

Note on the helicity decomposition of spin and orbital optical currents

Andrea Aiello, M. V. Berry

摘要:

在螺旋度表示中,当使用电场或磁场计算时,单色光场的坡印廷矢量(电流)分为右手和左手贡献,没有交叉螺旋度贡献。交叉螺旋度项确实出现在对电流的轨道和自旋贡献中。但是当电磁公式被平均时(“电磁民主”),这些项就被取消了,恢复了轨道和自旋分别为右手流和左手流的分离。

英文摘要:

In the helicity representation, the Poynting vector (current) for a monochromatic optical field, when calculated using either the electric or the magnetic field, separates into right-handed and left-handed contributions, with no cross-helicity contributions. Cross-helicity terms do appear in the orbital and spin contributions to the current. But when the electric and magnetic formulas are averaged ('electric-magnetic democracy'), these terms cancel, restoring the separation into right-handed and left-handed currents for orbital and spin separately.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑