Quantum vortices in optical lattices

被引：9
|
作者：
Vignolo, P. [1 ]
Fazio, R.
Tosi, M. P.
机构：
[1] NEST CNR INFM, I-56126 Pisa, Italy
[2] Scuola Normale Super Pisa, I-56126 Pisa, Italy
[3] Ist Nazl Fis Nucl, I-56127 Pisa, Italy
[4] SISSA, I-34014 Trieste, Italy
来源：
PHYSICAL REVIEW A | 2007年 / 76卷 / 02期
关键词：
D O I：
10.1103/PhysRevA.76.023616
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A vortex in a superfluid gas inside an optical lattice can behave as a massive particle moving in a periodic potential and exhibiting quantum properties. In this paper we discuss these properties and show that the excitation of vortex dynamics in a two-dimensional lattice can lead to striking measurable changes in its dynamic response. It would be possible by means of Bragg spectroscopy to carry out the first direct measurement of the effective vortex mass. In addition, the experiments proposed here provide an alternative way to study the pinning to the underlying lattice and the dissipative damping.
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页数：4
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