相干控制共振双光子光物质相互作用中的角动量转移。

Coherent control of angular momentum transfer in resonant two-photon light-matter interaction.

机构信息

Radboud University Nijmegen, Institute for Molecules and Materials, P.O. Box 9010, NL-6500 GL Nijmegen, The Netherlands.

出版信息

Phys Rev Lett. 2010 Apr 2;104(13):133001. doi: 10.1103/PhysRevLett.104.133001. Epub 2010 Mar 29.

DOI:10.1103/PhysRevLett.104.133001

PMID:20481880

Abstract

We show experimentally and theoretically that a polarization-shaped femtosecond laser pulse with a zero net angular momentum creates a net angular momentum in atomic rubidium during resonant two-photon excitation. The necessary conditions for the creation of a nonzero angular momentum as well as the excitation efficiencies are analyzed in the framework of second-order time-dependent perturbation theory.

摘要

我们通过实验和理论证明，在共振双光子激发过程中，具有零净角动量的偏振整形飞秒激光脉冲会在原子铷中产生净角动量。我们在二阶含时微扰理论框架下分析了产生非零角动量的必要条件以及激发效率。