Optical excitation of nonlinear spin waves

被引：6

作者：

McGuirk, J. M. ^{[1
]}

Zajiczek, L. F. ^{[1
]}

机构：

[1] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

来源：

NEW JOURNAL OF PHYSICS | 2010年 / 12卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

TRANSPORT-PROPERTIES;

D O I：

10.1088/1367-2630/12/10/103020

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a technique for exciting spin waves in an ultracold gas of Rb-87 atoms on the basis of tunable ac Stark potentials. This technique allows us to excite normal modes of spin waves with arbitrary amplitudes in the trapped gas, including dipole, quadrupole, octupole and hexadecapole modes. These modes exhibit strong nonlinearities, which manifest as amplitude dependence of the excitation frequencies and departure from sinusoidal behavior. Our results are in good agreement with a full treatment of a quantum Boltzmann transport equation.

引用

页数：11

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