Quantized rotation of atoms from photons with orbital angular momentum

被引：479

作者：

Andersen, M. F. ^{[1
]}

Ryu, C. ^{[1
]}

Clade, Pierre ^{[1
]}

Natarajan, Vasant ^{[1
]}

Vaziri, A. ^{[1
]}

Helmerson, K. ^{[1
]}

Phillips, W. D. ^{[1
]}

机构：

[1] NIST, Atom Phys Div, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.97.170406

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate the coherent transfer of the orbital angular momentum of a photon to an atom in quantized units of h, using a 2-photon stimulated Raman process with Laguerre-Gaussian beams to generate an atomic vortex state in a Bose-Einstein condensate of sodium atoms. We show that the process is coherent by creating superpositions of different vortex states, where the relative phase between the states is determined by the relative phases of the optical fields. Furthermore, we create vortices of charge 2 by transferring to each atom the orbital angular momentum of two photons.

引用

页数：4

共 37 条

[1] Coherent transfer of orbital angular momentum from an atomic system to a light field [J].